Introduction
(Saul Loeb/AFP/Getty Images)
Television host and comedian Stephen Colbert listens to a question as he testifies on farm workers before the House Subcommittee on Immigration, Citizenship, Refugee, Border Security, and International Law on September 24, 2010.
Stephen Colbert's testimony in front of the House Judiciary Committee has shined a spotlight on celebrity appearances on Capitol Hill. The television host and comedian is one of many big names to testify in front of Congress on a cause of personal importance.
Here's a chronological look at some notable visits to Capitol Hill.
