The legislative branch (one of three) has two parts. The House of Representatives and the Senate
The House of Representatives is changed every two years and everyone has to be at least twenty-five years old. The House is population based.
The Senate consists of two senators from each state. Their terms last six years. They have to be at least thirty years old.
Each house is in charge of keeping itself in check.
The houses need to keep records
Members of both houses get paid.
You cannot hold any other office in the government if you are going to be or are in the legislative branch of federal government.
The federal (legislative) government has the power to collect taxes, borrow money on the account of the United States, print money, make post offices, declare war, provide and maintain a navy, treaties, alliances, grant titles of nobility.