Who makes federal laws?

Why this is the answer

Congress makes federal laws, and USCIS accepts three ways of saying so: Congress, the Senate and House of Representatives, or the U.S. or national legislature. All three name the same body. Article I of the Constitution vests the legislative powers it grants in Congress and then says that Congress consists of a Senate and a House. Because it has two chambers, it is called a bicameral legislature. A federal law usually applies in every state and to everyone in the country. Passing one takes several steps. A bill can begin in either chamber, with one exception: a bill that raises taxes has to start in the House. A committee studies it and sometimes changes it, and then it goes to the full chamber. Each chamber needs a majority. In the House that means 218 members, or a majority of those present and voting, and in the Senate it means 51 senators, or a majority of those present and voting, for most bills. When each chamber passes its own version, the bill often goes to a conference committee with members from both, which writes one final text and sends it back to each chamber for approval. Once both chambers approve it, the bill goes to the President. A signature makes it law. If the President refuses and returns it with objections, Congress can still pass it with a two-thirds vote in each chamber. That final step is where a tempting wrong answer comes from. Because the President signs laws, it is tempting to say the President makes them. Signing approves a bill that Congress has already written and passed, and the President has nothing to sign until Congress sends it. Naming the Senate alone, or the House alone, falls short as well, since the accepted answer names them together. Congress writes and passes, the President signs. Keep the verbs in that order and the answer is Congress.