They are chosen by the leaders of the house and senate.
The vote of the Majority Party.
party primaries
There are three types of House Committees: 1) standing committees elected by members of the House, 2) select committees appointed by the Speaker of the House, and 3) joint committees whose members are chosen according to the statute or resolution that created that committee.
standing committee
Committee chairmen are chosen based on seniority, expertise, and party affiliation in the U.S. Congress. In general, the majority party in Congress selects committee chairmen, usually based on recommendations from party leaders. Chairmanships can also be influenced by internal committee rules and traditions.
joint committee
Agriculture, Nutrition, and Forestry Committee.
senioirty The seniority rule was used until the mid-1970s. Committee chairs are now chosen by the majority-party members.
Standing Committee
Standing Committee
Standing Committee