Obama lumps Romney, Trump together

Barack Obama's campaign puts out a new web ad, hitting Mitt Romney and surrogate, Donald Trump, over the Don's birtherism (past and pseudo-present).

Included: a bunch of clips of Trump being all conspiracy-theorist with a soundtrack that sounds very hillbilly (the implication, I'm guessing, is that birtherism is an ignorant, kooky theory that's indulged by "Doomsday Preppers" you'd see on the National Geographic Channel).