American Politics 101

Most arguments about politics fall apart for a simple reason: nobody actually knows who's in charge of what. That's the gap this new series is here to close.

Welcome to Politics 101, an easy guide to how governments work across the transatlantic world. Every entry takes a country apart piece by piece, so that when something goes wrong, you know exactly who to blame. Today, in honor of its 250th anniversary, we start with the United States.

The signing of the Declaration of Independence, 1776

A Quick History

The United States declared independence from Great Britain in 1776, and after the war, tried its first form of government under the Articles of Confederation. It was an attempt to build a country out of loosely connected states with a very weak central government, so loose and so weak that almost nothing could get done.

In 1787, the Founding Fathers gathered in Philadelphia to write a new governing charter: a Constitution that still frames how America is governed today. The biggest fight in that room was between the Federalists, who wanted a strong central government, and the Anti-Federalists, who wanted something closer to the weak arrangement they'd just abandoned.

The result is the oldest surviving national constitution on earth, though it's been amended 27 times. The first ten amendments (the Bill of Rights) cover freedom of speech, freedom of religion, the right to bear arms, and a run of other core protections. The 17 amendments since have done everything from ending slavery to changing when the president is sworn in to, briefly, outlawing alcohol (they walked that one back a few years later).

What the Constitution actually sets up is a democratic constitutional republic with limited federal power: a single executive (the president), a two-chamber legislature (the House and Senate), and a judiciary anchored by one Supreme Court sitting above a network of smaller federal courts.

The Executive Branch

Start with the single most powerful person in the government. The executive branch is the president, the vice president, and all the cabinet agencies most people picture when they hear "the government." Its job is to carry out the laws the legislature passes.

The president and vice president's authority comes from a single national vote, one that usually, though not always, produces a popular-vote winner. But the actual winner is chosen by the Electoral College, where each state gets a batch of votes equal to its number of representatives and senators combined. California gets 54, Texas gets 40, all the way down to Wyoming's 3. DC also gets three electoral votes, courtesy of the 23rd Amendment.

It's a big job. The president is commander in chief, so the military reports to him. He signs bills into law, or vetoes them if he doesn't like them. He selects his top officials and federal judges, who are then confirmed by the Senate.

That confirmation requirement is the separation of powers in action: the most brilliant part of the Constitution. Each of the three branches can check the power of the other two. The president picks his Secretary of State or his Supreme Court nominee, and the Senate can reject them. The president checks Congress by vetoing legislation. The Supreme Court can strike down laws that Congress passed and the president signed. In theory, this keeps power spread thin enough that if any one person became unhinged or dangerous, they couldn't do much damage without at least one other branch coming along for the ride.

The Legislative Branch

Then there's Congress, the legislative branch. The US runs a bicameral legislature, which is just a formal way of saying "two chambers."

The lower house, the House of Representatives, has 435 members, elected every two years, apportioned to each state by population. The Senate is the upper house: 100 members, roughly a third up for election every six years, with every state (California and little old Wyoming alike) sending exactly two, regardless of population.

Originally, the House was meant to represent the people and the Senate was meant to represent state governments; state legislatures actually chose senators until the 17th Amendment in 1913 changed that to direct election.

Congress does what you'd expect: it writes the laws. For a bill to reach the president's desk, the House and Senate have to pass the exact same version. Its second major job is setting the federal budget: the "power of the purse." The White House has input, but the responsibility is entirely Congress's. If lawmakers want to stop a president from doing something, they can simply cut the funding. Politics aside, that's the lever.

This is also where most of Washington's gridlock lives. Passing a law only takes a simple majority (50% plus one), but the Senate can filibuster, blocking a vote unless 60 senators agree to end debate. In a chamber that's close to evenly split, as it often is now, 60 votes for anything is a tall order. And even if the Senate passes something, the House can reject it, as it did during last winter's government shutdown. If both chambers pass a bill, the president can still veto it, and Congress can only override that veto with a two-thirds majority, a bar so high that today's Congress can barely agree on the color of the sky.

Inside each chamber, there's a majority party and a minority party, and the US runs on a majoritarian system: no coalition-building, no consensus requirement. Whoever holds the most seats controls everything: what bills reach the floor, how debate unfolds, all of it. The minority party has very little formal power. If voters want the minority to do more than object loudly, their real leverage is peeling off a handful of majority-party members willing to cross over.

The Judicial Branch

Then there's the third branch, the quiet, strange one: the judiciary. That's the federal court system, topped by the Supreme Court's nine justices, each nominated by the president and confirmed by the Senate.

You don't hear much about the courts day to day, and that's by design. Their job is to interpret the laws Congress passes and the actions presidents take, checking whether they're constitutional. If they're not, they get struck down. If the Supreme Court rules against you, that's the end of the line. There's no one left to appeal to. This is judicial review, and every level of the federal court system exercises it.

Once a federal judge is confirmed, they're set for life. No mandatory retirement, no term limit. The point is that judges shouldn't have to run for office or bend to political pressure to keep their jobs. In practice, there are still de facto conservative and liberal judges, appointed by Republican or Democratic presidents, but that's the outer edge of how partisanship is allowed to touch the courts. It's also why every Supreme Court vacancy turns into a political brawl: whichever party lands their pick gets roughly 30 years of influence, long after the president who made the appointment has left office. That's a thrilling prospect if you backed that president, and an unsettling one if you didn't.

One More Layer: Federalism

There's a final piece to this, because the United States is a federal republic, not a unitary one. Everything described so far (the president, Congress, the Supreme Court) is just the national government in Washington. Unlike many European states, where power sits centrally, the US splits authority between the federal government and the states.

The federal government's delegated powers cover things like issuing currency, declaring war, entering treaties, setting immigration policy, and granting patents. States, through their reserved powers, can do essentially anything the Constitution doesn't explicitly assign to Washington: issuing licenses, running public schools and health departments, and, critically, running elections. Depending on where you live, both levels build roads, run courts, pass laws, and collect taxes. So if you're looking to place blame for something specific, it really does depend on where and what.

The Constitution had real flaws that needed correcting (such as 13th and 19th Amendments among them), but it was genuinely ahead of its time in how it diffused power that, in other countries, tends to concentrate in one body or one person. Every state runs its own version of the same three-branch structure: its own governor, its own legislature, its own courts (Nebraska being the lone holdout with a unicameral legislature). Some states hand their governors more power than others, but the basic architecture repeats everywhere.

For most of daily life, it's the states running the show: your schools, your police, your roads, most of your taxes, who can vote and how, even how your state's 435 combined House districts get drawn. So when something down the road needs fixing, the call goes to your state government, not Washington. The US Department of Transportation doesn't repair potholes. Washington gets the attention, from voters and media alike, but it's your state government in Madison, Sacramento, or Tallahassee that should actually be on speed dial.

Putting It All Together

The president carries out the laws Congress passes, but Congress controls the money that funds them. The president picks agency heads and federal judges, but the Senate has to sign off. And the courts can declare anything Congress passes or the executive branch does unconstitutional. That's checks and balances in a nutshell, and it's the main reason sweeping policy change rarely happens unless one party controls every branch at once. That difficulty was the point, not a flaw.

Distrust of concentrated power is baked into America's DNA, and has been since the founding. Rather than handing all authority to one person and hoping they turn out decent, the Constitution, along with dozens of state and territorial governments, spreads the burden. When someone in power isn't decent, the system is built so that it isn't the end of everything.

Next up in the series: France, and how a history running from headless kings to a treasonous head of state produced its own distinctive split: a strong president with some powers, a prime minister running the rest.