Puerto Rico-born Rep. Raul Labrador: 'I have a birth certificate'
                                
                                
                                    (Newser) -
                                    Next stop on the comedy circuit, CPAC? Rep. Raul Labrador, who was born in Puerto Rico, drew guffaws and applause after whipping out a birther joke during his address yesterday, saying he was "an American citizen by birth, and I have the birth certificate to prove it." But...