Legislative Branch
The federal government has three branches, each with distinct responsibilities and powers. This separation balances the branches and keeps any one of them from growing too powerful. The first branch of government is the legislative branch, or Congress. It makes the nation’s laws. Article I of the Constitution divides Congress into the House of Representatives and the Senate.
With 435 members, the House of Representatives is the larger congressional house. The U.S. Census, a population count made every 10 years, determines how many members represent each state. A system called apportionment keeps total membership at 435. If one state gains a member, another state loses one. Members must be at least 25 years old, live in the state where they were elected, and have been U.S. citizens for seven years. They serve two-year terms.
The Senate has two members, or senators, per state. Senators represent the interests of the whole state, not just a district. They must be at least 30 years old, have been U.S. citizens for nine years, and live in the state they represent. They serve six-year terms. The senior senator of a state is the one who has served the longer of the two. Members of Congress can serve an unlimited number of terms.
The political party with more members in each house is the majority party. The one with fewer members is the minority party. The leader of the House of Representatives, or Speaker of the House, is elected by House members from the majority party.
The U.S. vice president serves as president of the Senate. He takes no part in Senate debates but can vote to break ties. If he is absent, the president pro tempore (pro tem for short) leads the Senate. There is no law for how the Senate must choose this position, but it traditionally goes to the majority party’s senator who has served the longest.
Congress begins sessions, or meetings, each year in the first week of January. Both houses do most of their work in committees. Each committee studies certain types of bills, or suggested laws. For example, all bills about taxes begin in the House Ways and Means Committee.

Comparing and Contrasting What are the similarities in requirements for members of the House of Representatives and the Senate? What are the differences?

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