In this episode, questions remain about Obama's birth certificate. What does this mean for Trump's chances? Then, the royal wedding is a triumph, but was Kate's dress too much like Grace Kelly's? Plus, "Fast Five" sets a record for the biggest April movie opening ever. Vin Diesel and Dwayne "The Rock" rocked it. Seth Meyers did a great job at the correspondents' dinner, but I've got to say, this weekend, Barack Obama really killed. This is The Colbert Report.