Calling someone a liar is a serious accusation. This is why, aside from the unwritten contract allowing for mutual prevarication, politicians are so reluctant to do it. And not just anyone is a liar. Legend has it that our first president said, “I cannot tell a lie,” but, being only human, G.W. no doubt could and certainly did, at some point. A liar, however, is someone who lives and breathes the lie; someone who specializes in the art of artifice; someone to whom lying is his first recourse, not his last. Such a man is Barack Obama.