"The legislative branch appropriations bill provides funding for the Senate; House of Representatives; Joint Items; Capitol Police; Office of Compliance; Congressional Budget Office (CBO); Architect of the Capitol (AOC); Library of Congress (LOC), including the Congressional Research Service (CRS); Government Printing Office (GPO); Government Accountability Office (GAO); and Open World Leadership Center. […] Neither a legislative branch appropriations bill, nor a continuing appropriations resolution (CR), containing FY2014 funding was enacted prior to the beginning of the fiscal year on October 1. A funding gap, which resulted in a partial government shutdown, ensued for 16 days. […] The legislative branch budget has decreased each year since FY2010. The FY2013 act funded legislative branch accounts at the FY2012 enacted level, with some exceptions (also known as 'anomalies'), less across-the-board rescissions that applied to all appropriations in the act, and not including sequestration reductions implemented on March 1. […] The smallest of the appropriations bills, the legislative branch comprises approximately 0.4% of total discretionary budget authority."
CRS Report for Congress, R43151