Today is National Pet Day. We are celebrating our animal friends with a look back at pets that have lived in the White House.
Political hopefuls burn bright, then fade. Parties and poll numbers rise and fall. Presidents pass the torch, power changes hands.
Charles Dharapak, a veteran photographer who has spent the past decade chronicling the activities and travels of U.S. presidents and American political campaigns, has been named Asia-Pacific regional photo editor for The Associated Press.