It's no secret that Donald Trump tends to get embroiled in drama. Last night on "The Situation Room with Wolf Blitzer," Trump was at it again, sparring with Blitzer over President Obama's Hawaiian birth certificate. This morning, Wolf talks to Ashleigh on "Early Start" about why the Donald cannot let go of the birther movement. … Continue reading Wolf Blitzer responds to his Donald Trump interview, says if Trump is going to back up 'birther' claims, he has to have evidence