Select or special committee

A select or special committee of the United States Congress is a congressional committee appointed to perform a special function that is beyond the authority or capacity of a standing committee. A select committee is usually created by a resolution that outlines its duties and powers and the procedures for appointing members. Select and special committees are often investigative in nature, rather than legislative, though some select and special committees have the authority to draft and report legislation.

A select committee generally expires on completion of its designated duties, though they can be renewed. Several select committees are treated as standing committees by House and Senate rules, and are permanent fixtures in both bodies continuing from one congress to the next. Examples of this are the Permanent Select Committee on Intelligence in the House and the Select Committee on Intelligence in the Senate. The Senate Indian Affairs Committee is also a select committee, though the name select is no longer a part of its title.

Some 20th-century select committees are called special committees, such as the Senate Special Committee on Aging. However, they do not differ in any substantive way from the others.

Prior to the advent of permanent standing committees in the early 19th century, the House of Representatives relied almost exclusively on select committees to carry out much of its legislative work. The committee system has grown and evolved over the years. During the earliest Congresses, select committees, created to perform a specific function and terminated when the task was completed, performed the overwhelming majority of the committee work. The first committee to be established by Congress was on April 2, 1789, during the First Congress. It was a select committee assigned to prepare and report standing rules and orders for House proceedings, and it lasted just five days, dissolving after submitting its report to the full House. Since that time, Congress has always relied on committees as a means to accomplish its work.

...
Wikipedia