For years, conservatives have puzzled over President Barack Obama's continued personal popularity in the face of his dramatically uninspiring performance as commander-in-chief. Obama seems to inspire a bizarre personal loyalty among his advocates, particularly among young people who should by all rights be concerned with their fading futures and collapsing prospects. Why do his numbers remain so stubbornly mediocre? The answer came Tuesday in the form of a ridiculous video cut by Obama with the help of "The Hangover" star Zach Galifianakis and the online outlet Funny or Die. Funny or Die is in the viral video business; it often...