The Republican Study Committee (RSC) has served as the conservative caucus of House Republicans and a leading influencer on the Right since its original founding in 1973. It exists to bring like-minded House members together to promote a strong, principled legislative agenda that will limit government, strengthen our national defense, boost America’s economy, preserve traditional values and balance our budget. The RSC provides the tools and research that members of Congress need to craft and advance policies that will benefit the American people. It also provides a forum for like-minded members to join together to support common causes and challenge the status quo. By doing so, the RSC ensures that conservatives have a powerful voice on every issue coming before the House, whether it is the economy, health care, defense, social safety net reform, or Washington’s dangerous, out-of-control spending.

The Tea Party Caucus (TPC) is a congressional caucus of conservative members of the Republican Party in the United States House of Representatives. The now largely inactive Caucus is chaired by Rep. Tim Huelskamp of Kansas, and was founded and first chaired by Minnesota Congresswoman Michele Bachmann in July 2010. Though the primary functions of the Caucus have varied from year to year, its members have promoted budget cuts, including significant cuts in non-defense spending and adherence to the movement's interpretation of the Constitution. The caucus's members have also advocated socially conservative legislation, supported the right to keep and bear arms, and promoted limited government.

Founded in 2005 by Congressman Scott Garrett, the Congressional Constitution Caucus is a group of members of the House of Representatives that seeks to restore limited government to safeguard individual liberty as intended by our Founders and prescribed by our Constitution.