Access Hollywood reports that Hillary Clinton will make an appearance on The Late Show tonight with David Letterman. In his first show back since an early November strike shut down new material, Letterman was originally slated to host actor Robin Williams.

Clinton's visit is made possible because Letterman's company, Worldwide Pants, reached a separate deal with the striking Writers' Guild of America. Without a deal, Clinton never would have crossed a picket line.

The issue came up earlier today when the AP asked Mike Huckabee whether he was willing to cross a picket line in order to appear on Jay Leno's Tonight Show from Burbank. Huckabee was unaware that only Letterman had reached a deal. "I support the writers, by the way. Unequivocally, absolutely," Huckabee told the AP. "I don't anticipate that it's crossing a picket line."

The AP told him he was wrong, but Huckabee offered no response beyond "Oh." Another gaffe for the now-error prone former governor? One would imagine that Clinton's people not only made sure there was a deal with the Letterman strikers but that they made sure WGA officials were okay with Clinton's appearance.