WASHINGTON - MAY 12:  Former Rep. Bob Barr (R-GA) holds a news conference to announce his candidacy for President of the United States May 12, 2008 in Washington, DC. During the press conference, Barr announced he will campaign as a candidate for the Libertarian Party's presidential nomination. Getty Images logo Getty Images 49 months ago

WASHINGTON - MAY 12: Former Rep. Bob Barr (R-GA) holds a news conference to announce his candidacy for President of the United States May 12, 2008 in Washington, DC. During the press conference, Barr announced he will campaign as a candidate for the Libertarian Party's presidential nomination.