
Bills begin and end their lives in committees, whether they are passed into law or not. Hearings from interest groups and agency bureaucrats are held at the committee and subcommittee level, and committee members play key roles in floor debate about the bills that they foster.
Committees help to organize the most important work of Congress — considering, shaping, and passing laws to govern the nation. 8,000 or so bills go to committee annually. Fewer than 10% of those bills make it out for consideration on the floor.
There are four types of congressional committees:


After each congressional election, political parties assign newly elected Representatives and Senators to standing committees. They consider a member's own wishes in making the assignments, but they also assess the needs of the committees, in terms of region of the country, personalities, and party connections.
Since the House has 435 members, most Representatives only serve on one or two committees. On the other hand, Senators often serve on several committees and subcommittees. Committee assignment is one of the most important decisions for a new member's future work in Congress. Usually, members seek appointment on committees that will allow them to serve their districts or state the most directly. However, a members from a "safe" district — where his or her reelection is not in jeopardy — and who wants to be a leader in Congress, may want to be named to a powerful committee, such as Foreign Relations, Judiciary, or the House Ways and Means. There they are more likely to come into contact with current leaders and perhaps even gain some media attention.
| HOUSE COMMITTEES | SENATE COMMITTEES |
| Agriculture | Agriculture, Nutrition, and Forestry |
| Appropriations | Appropriations |
| Armed Services | Armed Services |
| Budget | Banking, Housing, and Urban Affairs |
| Education and Labor | Budget |
| Energy and Commerce | Commerce, Science, and Transportation |
| Ethics | Energy and Natural Resources |
| Financial Services | Environment and Public Works |
| Foreign Affairs | Finance |
| House Administration | Foreign Relations |
| Judiciary | Health, Education, Labor, and Pensions |
| Natural Resources | Health, Education, Labor, and Pensions |
| Oversight and Reform | Homeland Security and Governmental Affairs |
| Rules | Judiciary |
| Science, Space and Technology | Rules and Administration |
| Small Business | Small Business and Entrepreneurship |
| Transportation and Infrastructure | Veterans Affairs |
| Veterans Affairs | |
| Ways and Means |