The Congressional Research Service (CRS) provides comprehensive research and analysis on all legislative and oversight issues of interest to the United States Congress. A service unit of the Library of Congress, CRS is part of the legislative branch. CRS serves as a shared research resource to all Members, committees and staff. As a complement to the staffs of each Member office and committee, CRS assists Congress throughout the legislative process. All services are authoritative, confidential, objective and nonpartisan.