Answer:
Under the Constitution, the Legislative Branch makes most of the US's laws.
The Legislative Branch is split into two houses, the Senate, as well as the House of Representatives. The Senate comprises of 100 seats, in which each state gets 2 (equal representation by the New Jersey Plan). On the other hand, the House of Representative contains 435 seats, in which seats are distributed to each state based on their population.
To create a law, it first starts as a bill that is introduced to the house/senate floor, and is voted on. If passed, it continues to the next house, and if it passes these 2 hurdles, it arrives to the president. The President can then either pass or veto the bill, in which the bill is dropped or is repassed again through a majority vote by the two houses once again. Also, the bill can be voided by the Supreme Court if it is declared unconstitutional. This is what is now known as "Checks and Balances", which ensures that no one branch of government becomes too powerful.
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