Celebrities who have gone before Congress

Published On: Mar 14 2012 08:56:03 AM PDT   Updated On: Mar 14 2012 09:32:20 AM PDT
George Clooney testifies on Sudan

Actor George Clooney is one of a parade of celebrities to testify before Congress. Dozens of others have gone before lawmakers on a variety of issues over the years. Check some of them out in this slideshow.