The chaplain of the United States Senate opens each session of the United States Senate with a prayer, and provides and coordinates religious programs and pastoral care support for senators, their staffs, and their families. The chaplain is appointed by a majority vote of the members of the Senate on a resolution nominating an individual for the position. The three most recent nominations have been submitted based on a bipartisan search committee although that procedure is not required.

The United States Senate is the upper chamber of the United States Congress. The United States Senate and the lower chamber of Congress, the United States House of Representatives, comprise the federal bicameral legislature of the United States. Together, the Senate and the House maintain authority under Article One of the U.S. Constitution to pass or defeat federal legislation. The Senate has exclusive power to confirm U.S. presidential appointments, approve or reject treaties, and try cases of impeachment brought by the House. The Senate and the House provide a check and balance on the powers of the executive and judicial branches of government.