Daniel sent us this one — he's asking about the US bicameral system, how Congress and the Senate actually differ in power, and how federalism divides authority between Washington and the states. And the part that really grabbed me: what does it mean when you hear about federal versus state charges in a terrorism case? Because from outside, it looks like a contradiction — one country where a single act can produce two separate prosecutions, and nobody calls it double jeopardy.
That's exactly the right instinct to follow. The dual sovereignty doctrine is the payoff for understanding the whole structure. But to get there, we need to start with why the US even has two chambers of Congress in the first place, and what each one actually does. Because that horizontal split — House versus Senate — is only half the story. The vertical split between the federal government and the states is where things get genuinely strange if you didn't grow up with it.
Let's start with the most basic question: why two chambers, and what does each one actually do?
The House of Representatives has four hundred thirty-five voting members, apportioned by population. California has fifty-two seats. Wyoming has one. Every representative serves a two-year term, which means the entire House is up for reelection every two years. The design was intentional — the founders wanted one chamber that was directly responsive to the people, almost constantly facing the voters. It's the political equivalent of a heart rate monitor.
The Senate is the slow pulse.
One hundred members, two per state regardless of population. Wyoming's five hundred eighty thousand people get two senators. California's thirty-nine million people also get two. Six-year terms, staggered so only about a third of the Senate is up for reelection at any given time. The Senate was designed to be the deliberative body — less responsive to popular passion, more insulated from the moment. George Washington supposedly described it as the saucer where you pour hot tea to let it cool.
The saucer analogy. Which is a very eighteenth-century way of saying "let's make sure the mob doesn't rush into anything.
That structural difference plays out in specific powers. The House originates all revenue bills — any legislation that raises money has to start there. The House also has the sole power to impeach federal officials, which is essentially the power to bring charges. But the Senate holds the impeachment trial and decides whether to convict and remove. The Senate also has what's called "advice and consent" power — they confirm presidential appointments to the cabinet, to the federal judiciary, and to the Supreme Court. They ratify treaties, which requires a two-thirds vote.
The House controls the purse strings and can point a finger. The Senate decides who gets to be a judge and whether the country signs international agreements. Those are meaningfully different jobs.
Here's the key insight for anyone not American: the Senate was designed to represent states, not people. That's the Great Compromise of seventeen eighty-seven. At the Constitutional Convention, the big states wanted representation by population. The small states said absolutely not — we'll be steamrolled. The compromise was a bicameral legislature where one chamber represents population and the other represents states as equal political units. It's baked into Article Five of the Constitution — no state can be deprived of equal suffrage in the Senate without its consent. That provision is effectively unamendable.
Which means if you're watching US politics from abroad and wondering why a senator from North Dakota representing seven hundred eighty thousand people has the same voting power as a senator from Texas representing thirty million, the answer is: the system was built that way on purpose, and changing it would require unanimous consent of all fifty states.
This structural imbalance shapes everything. The Senate has a rule called the filibuster — not in the Constitution, just a Senate rule — that effectively requires sixty votes to pass most legislation, not a simple majority of fifty-one. The filibuster started as a loophole. In eighteen-oh-five, the Senate cleaned up its rulebook and accidentally removed the mechanism for cutting off debate. A few decades later, senators realized they could talk indefinitely to block a vote. By nineteen-seventeen, the Senate adopted a cloture rule requiring a two-thirds majority to end debate — that was reduced to three-fifths, or sixty votes, in nineteen seventy-five.
The accidental removal of a procedural rule created a de facto supermajority requirement that's been shaping American legislation for over two centuries. That's the most accidentally consequential cleanup in political history.
It means the Senate is structurally conservative — small-c conservative — in the sense that it's much harder to pass legislation through the Senate than through the House. The House runs on simple majority rule. If you have two hundred eighteen votes, you pass your bill. In the Senate, you need sixty votes to overcome a filibuster for most things. There are exceptions — budget reconciliation bills only need fifty-one votes, which is how the twenty twenty-one infrastructure bill and the twenty twenty-two Inflation Reduction Act got through.
The infrastructure bill that passed with fifty-one votes through reconciliation because it couldn't get sixty. That's a perfect example of the Senate's structural friction at work.
Here's where the advice and consent power gets especially consequential. A single senator can place what's called a hold on a presidential nominee. They don't need a majority, they don't need a committee vote — they can just notify their party leader that they object, and the nomination stalls. This gives individual senators outsized influence over who becomes a federal judge or a cabinet secretary. The Senate Judiciary Committee handles judicial nominations, and the confirmation process for Supreme Court justices has become one of the most contentious features of American politics precisely because those are lifetime appointments and the Senate is the chokepoint.
If you're outside the US watching a Supreme Court confirmation battle and wondering why it's such an all-consuming political fight, it's because the Senate is the only gate, and the filibuster means the minority party has leverage even when they've lost the majority. Though the filibuster for Supreme Court nominees was eliminated in twenty seventeen.
In twenty thirteen, the Democratic majority under Harry Reid eliminated the filibuster for lower court nominees and executive appointments. In twenty seventeen, the Republican majority under Mitch McConnell extended that to Supreme Court nominees. So now judicial confirmations can pass with a simple majority. But legislation still faces the sixty-vote threshold, which is why major bills often need bipartisan support or get squeezed through reconciliation.
The treaty power is another one that confuses people outside the US. The president can negotiate and sign a treaty, but it doesn't take effect until the Senate ratifies it by a two-thirds vote. Which is why the United States has not ratified a lot of international agreements that other countries have signed on to. The Convention on the Elimination of All Forms of Discrimination Against Women, for example — the US signed it in nineteen eighty, but the Senate has never ratified it.
That's why presidents increasingly use executive agreements instead of treaties. An executive agreement doesn't require Senate approval. It's not technically a treaty under the Constitution, but it functions similarly in practice. The Iran nuclear deal in twenty fifteen was structured as an executive agreement precisely because the Obama administration knew it couldn't get sixty-seven votes in the Senate. The downside is that a future president can undo an executive agreement unilaterally, which is exactly what happened in twenty eighteen.
The Senate's treaty power creates this dynamic where the US can look schizophrenic on the international stage — signing agreements that never get ratified, or entering deals that the next president can tear up with a pen stroke. All because the founders wanted the states, through the Senate, to have a veto on international commitments.
That horizontal split between House and Senate is only half the story. The vertical split — between the federal government and the states — is where things get really interesting.
This is the part where my leaf medicine practice becomes a constitutional question.
Let's start with the Tenth Amendment: "The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people." That one sentence is the foundation of American federalism. The federal government only has the powers explicitly granted to it. Everything else belongs to the states.
Which is the opposite of how most countries work, where the central government holds all power and devolves some of it downward.
The US Constitution is a delegation document. It says: here are the specific things the federal government can do — regulate interstate commerce, declare war, coin money, establish post offices, grant patents, govern immigration, make treaties. Everything not on that list — which includes criminal law, family law, property law, contract law, education, public health, and most of what we'd call police powers — belongs to the states.
When people say "states' rights," they're talking about this default allocation of power. The states aren't granted rights by the federal government. The federal government is granted limited powers by the states and the people.
That's the theory. In practice, the federal government's power has expanded enormously over two centuries, largely through the Commerce Clause. Article One, Section Eight gives Congress the power to regulate commerce among the several states. The Supreme Court interpreted that broadly for most of the twentieth century — if an activity substantially affects interstate commerce, Congress can regulate it. That's how the federal government can set minimum wage laws, ban workplace discrimination, and regulate environmental standards.
There are limits. You mentioned United States versus Lopez.
Nineteen ninety-five. The Supreme Court struck down the Gun-Free School Zones Act, which made it a federal crime to possess a firearm near a school. The Court said Congress had exceeded its commerce power because possessing a gun near a school isn't an economic activity. It was the first time in sixty years the Court had limited federal authority under the Commerce Clause. Chief Justice Rehnquist wrote that if Congress could regulate gun possession near schools under the commerce power, it was hard to see what Congress couldn't regulate.
That's the tension. The Commerce Clause has been stretched to cover almost everything — and then occasionally the Court says, actually, no, there's a line somewhere.
The Supremacy Clause in Article Six is the other key piece. It says federal law is the supreme law of the land, and judges in every state are bound by it, anything in state law notwithstanding. But — and this is the crucial but — federal law is supreme only when Congress is acting within its constitutional authority. If Congress passes a law that exceeds its enumerated powers, it's not supreme because it's not valid law.
The Supremacy Clause isn't a blank check. It's supremacy within the lanes the Constitution assigns.
And this is why marijuana legalization is the perfect case study. As of June twenty twenty-six, twenty-four states have legalized recreational marijuana. But under federal law, marijuana is still a Schedule One controlled substance — the same category as heroin, defined as having no accepted medical use and a high potential for abuse. So in those twenty-four states, you can walk into a licensed dispensary, buy cannabis, and consume it legally under state law, while simultaneously violating federal law.
The federal government just chooses not to enforce.
That's the Cole Memorandum framework, issued by the Justice Department in twenty thirteen under the Obama administration. It directed federal prosecutors to deprioritize marijuana enforcement in states that had legalized it, as long as those states had robust regulatory systems. The Trump administration rescinded that memo in twenty eighteen, but didn't actually ramp up enforcement. The Biden administration has largely continued the hands-off approach. But the legal reality is that the DEA could raid any dispensary in Colorado tomorrow, and the dispensary owner would have no legal defense under federal law.
The entire legal cannabis industry in the United States exists because the federal government is exercising prosecutorial discretion not to enforce its own laws. That's a house of cards.
It's the definition of legal limbo. And it illustrates something essential about federalism: states can push back against federal policy, not by nullifying federal law — nullification was rejected in the eighteen-thirties and again during the civil rights era — but by simply not helping enforce it. The federal government relies on state and local law enforcement for a lot of ground-level policing. If a state decriminalizes marijuana, its police stop making marijuana arrests. The DEA doesn't have enough agents to fill that gap.
This dynamic plays out across multiple policy areas. Immigration is a good counterexample — states and cities that declared themselves "sanctuary" jurisdictions refused to cooperate with federal immigration enforcement, but immigration is squarely a federal power, so the legal conflict is different.
Immigration is an enumerated federal power. States can't legalize immigration the way they legalize marijuana because immigration isn't within their reserved powers. What sanctuary jurisdictions do is refuse to use state resources to assist federal immigration enforcement — they won't hold detainees for ICE beyond their release date, they won't share information. The federal government can't compel state officials to enforce federal law. That's the anti-commandeering doctrine from the Supreme Court's nineteen ninety-seven decision in Printz versus United States.
States have two tools: they can refuse to criminalize something under their own laws, and they can refuse to help the federal government enforce federal laws. They can't stop the feds from enforcing directly, but they can make it logistically harder.
Federal preemption is the flip side. When Congress acts within its authority and makes clear it intends to occupy a field, state laws in that area are preempted. The Airline Deregulation Act of nineteen seventy-eight explicitly prevents states from regulating airline prices, routes, or services. The Employee Retirement Income Security Act — ERISA — preempts state laws about employer-provided health insurance. If you work for a company with a self-funded health plan, your state's insurance regulations don't apply to that plan.
Which is why you can have a situation where state law says insurers have to cover certain treatments, but your employer's plan doesn't have to comply because it's governed by federal ERISA law. That's the kind of detail that drives people insane when they actually encounter it.
It gets litigated constantly. The twenty twenty-two Dobbs decision that returned abortion regulation to the states is the most dramatic recent example of federalism in action. The Court said there is no federal constitutional right to abortion — therefore, each state decides. Some states banned it immediately. Some protected it in their state constitutions. Some are in between. The federal government can't impose a nationwide standard either way unless Congress passes a law — which would itself be challenged on federalism grounds.
The twenty twenty-five Supreme Court case City of Grants Pass versus Johnson is another example. The question was whether a city's ban on homeless camping violated the Eighth Amendment's prohibition on cruel and unusual punishment. The Court ruled that it didn't — that camping bans are within local government authority. But the case illustrates how federal constitutional claims interact with state and local ordinances. A city passes a law, someone challenges it on federal constitutional grounds, and the case climbs through the federal courts.
Which brings us to federal agencies and law enforcement. Why does the US maintain federal law enforcement at all? The FBI, the DEA, the ATF, the Secret Service, the Marshals Service, Homeland Security Investigations — it's a sprawling apparatus.
From outside, it looks redundant. Why not just have one national police force?
Because most crime is state crime. Murder, robbery, assault, burglary — these are violations of state criminal codes, investigated by local police and prosecuted by district attorneys in state courts. The FBI has jurisdiction over federal crimes — things that cross state lines, things that involve federal property or federal officials, civil rights violations, bank robbery because banks are federally insured, terrorism, cybercrime, public corruption. The federal government can also investigate a state crime if it has a federal nexus.
What's a federal nexus?
A connection that makes a state crime also a federal crime. If you kidnap someone and take them across state lines, that's a federal kidnapping offense because it involves interstate travel. If you use the internet to commit fraud, that's wire fraud — a federal crime because the internet is an instrumentality of interstate commerce. If you rob a bank, that's a federal bank robbery charge because the bank's deposits are federally insured. The federal nexus turns a local crime into a federal case.
That brings us to the terrorism charging question, which is where the dual sovereignty doctrine becomes the payoff for understanding all of this.
The twenty thirteen Boston Marathon bombing is the cleanest example. Dzhokhar Tsarnaev was charged by the state of Massachusetts with murder — straightforward state criminal charges for killing people within Massachusetts. He was also charged by the federal government with using a weapon of mass destruction and other terrorism offenses. Two separate prosecutions for the same act. And that's not double jeopardy.
Which sounds like it should be double jeopardy. The Fifth Amendment says no person shall be "twice put in jeopardy of life or limb" for the same offense.
The dual sovereignty doctrine says the state and the federal government are separate sovereigns. Each has its own criminal laws, its own courts, its own prosecutorial authority. When Massachusetts prosecutes you for murder under Massachusetts law, and the federal government prosecutes you for terrorism under federal law, those are different offenses against different sovereigns. The Supreme Court affirmed this in nineteen twenty-two in United States versus Lanza, and reaffirmed it as recently as twenty nineteen in Gamble versus United States.
The same physical act — setting off a bomb — can produce two separate prosecutions, two separate trials, two separate sentences, and no double jeopardy violation, because you've committed two separate legal offenses against two separate governments.
And in the Tsarnaev case, the state prosecution sought the death penalty under Massachusetts law — though Massachusetts doesn't actually have the death penalty for state crimes, so that was the federal prosecution's domain. The federal jury sentenced him to death in twenty fifteen. The state charges were essentially a backstop.
This dual-track system applies beyond terrorism. If you're involved in a drug trafficking operation that crosses state lines, you could face state drug charges in multiple states plus federal conspiracy and trafficking charges. The federal government often takes over high-profile cases because federal sentencing guidelines tend to be harsher and federal prosecutors have more resources.
Federal convictions also mean federal prison, and there's no parole in the federal system — you serve at least eighty-five percent of your sentence. State systems vary widely. Some have parole, some don't. Some have early release for good behavior. The federal system is uniformly tough.
When the news reports that someone is facing federal charges in a terrorism case, it signals that the crime crossed state lines or involved international elements, that it violated specific federal terrorism statutes, that the prosecution will have the resources of the Justice Department behind it, and that the sentencing will be severe with no parole.
It often means both prosecutions are proceeding simultaneously or sequentially. The federal government and the state coordinate — they don't want to step on each other's evidence or witnesses. Sometimes the state defers to the federal prosecution because the federal charges carry more weight. Sometimes they run in parallel. The key for non-Americans watching this is: when you hear "federal charges," it's not just a more serious version of the same thing. It's a different legal system operating under different rules, with different jurisdictional triggers.
What does all this mean when you're reading the news? Let's pull it together with a concrete mental model.
Think of the US system as a division of labor with overlapping jurisdiction, not a hierarchy. The federal government has a specific list of things it can do — immigration, national defense, interstate commerce, patents, bankruptcy, federal crimes. The states have everything else — the general police power to regulate health, safety, welfare, and morals. When they overlap, both can act. When they conflict, federal law is supreme if Congress is acting within its authority. When the federal government chooses not to enforce, states can effectively go their own way.
The bicameral legislature adds another layer. The House represents population and controls the money. The Senate represents states and controls confirmations and treaties. The filibuster means most legislation needs sixty votes, which forces compromise or gridlock. The Senate's equal representation per state means rural states have disproportionate power, which explains why legislation that would benefit urban populations often dies in the Senate.
For non-Americans watching US politics, the Senate's structure is the single most important institutional feature to understand. It explains why a party can win the popular vote in Senate races nationally and still lose the majority. It explains why Supreme Court confirmations are so contentious — the Senate is the only gate, and those are lifetime appointments. It explains why the US hasn't ratified treaties that most other democracies have joined. It explains why major legislation is hard to pass even when one party controls both chambers and the presidency.
That last point is worth emphasizing. Even unified government doesn't guarantee action. The filibuster means the majority party in the Senate usually needs some opposition votes. Reconciliation provides a workaround for budget-related bills, but it's limited — you can't use it for everything. The Byrd Rule in the Senate restricts what can go into a reconciliation bill. It has to be primarily budgetary in nature, not just policy changes dressed up as budget items.
The federalism dimension adds yet another constraint. Even if Congress passes a law, states can challenge it in court on federalism grounds. They can argue Congress exceeded its commerce power, or violated the Tenth Amendment, or commandeered state officials. The Supreme Court becomes the arbiter. The twenty twelve Affordable Care Act case — NFIB versus Sebelius — is the classic example. The Court upheld most of the law but struck down the mandatory Medicaid expansion as coercive to the states. Seven justices agreed that Congress couldn't threaten to withdraw all Medicaid funding if states didn't expand.
The system has multiple veto points: the House, the Senate, the filibuster, the president's veto, and the courts. And then even after a law passes all of that, states can resist through non-cooperation and litigation. It's a system designed to make action difficult.
Designed, or evolved. The filibuster wasn't in the original design. Judicial review — the power of courts to strike down laws — isn't explicitly in the Constitution either. It was established in Marbury versus Madison in eighteen-oh-three. The system we have now is the product of two centuries of institutional evolution layered on top of the constitutional framework.
To answer the original question: Congress and the Senate are co-equal chambers with different powers. The House originates revenue bills and impeaches. The Senate confirms nominees, ratifies treaties, and holds impeachment trials. The filibuster makes the Senate the more conservative chamber. Federalism means states have all powers not delegated to the federal government, and the federal government is supreme only within its constitutional lanes. Federal charges in terrorism cases mean the crime crossed state lines or violated federal statutes, and dual sovereignty allows both state and federal prosecutions for the same act.
The open question — the one worth watching over the next few years — is whether the federalism balance is shifting. The Dobbs decision in twenty twenty-two returned abortion to the states, which expanded state authority. But the twenty twenty-four Rahimi decision on gun rights — where the Court upheld a federal law barring gun possession by people under domestic violence restraining orders — showed the Court isn't reflexively anti-federal. The tension is ongoing, and the twenty twenty-six midterms could shift control of Congress, which would change what legislation can pass.
Though again, the Senate's filibuster means even a shift in control doesn't guarantee action. The structural friction is permanent until the rules change.
The rules can change. The filibuster has been modified before — for nominees in twenty thirteen, for Supreme Court justices in twenty seventeen. There's nothing stopping a future Senate majority from eliminating it entirely for legislation. Whether that happens depends on whether the frustration with gridlock eventually outweighs the fear of what the other party might pass when they're in power.
Which is the eternal calculus of institutional design. Build enough friction to prevent rash action, but not so much that nothing moves at all. The US has been calibrating that balance for two hundred thirty-nine years and counting.
Now: Hilbert's daily fun fact.
Hilbert: In nineteen thirty-one, a Portuguese fisherman in the Azores found a sealed bottle containing a handwritten note from eighteen ninety-two, in which a minor Portuguese nobleman claimed to be the last surviving descendant of King Sebastian the First, who vanished at the Battle of Alcácer Quibir in fifteen seventy-eight — and declared himself the rightful monarch of a kingdom that had abolished its monarchy twenty-two years earlier.
Somewhere in the Azores, a fisherman pulled up a dead man's delusion of grandeur, corked and bobbing in the Atlantic for thirty-nine years.
That's one way to file a claim to a throne that doesn't exist anymore.
This has been My Weird Prompts, with me, Corn, and my brother Herman Poppleberry. Produced by Hilbert Flumingtop. If you found this useful, rate and review — it helps other curious non-Americans find the show. We're at myweirdprompts.
Until next time.
