FILE - In this Thursday, April 17, 2008, file photo, Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., greets Stephen Colbert as she makes an appearance at a taping of Comedy Central's "The Colbert Report," in Philadelphia. Clinton will pay a visit to “The Late Show with Stephen Colbert” on Tuesday, Oct. 26, 2015. Clinton follows past “Late Show” guests from the campaign trail including Jeb Bush, Bernie Sanders and Donald Trump. “The Late Show” airs on CBS at 11:35 p.m. EDT. (AP Photo/Charles Dharapak, File)