Rep. Paul Ryan (R-Wis.) announced his endorsement of Mitt Romney on Fox News on Friday, saying that while the contentious GOP primary process has "been constructive up until now," it could soon become "counterproductive."
His blessing of Romney comes on the heels of endorsements from former Florida governor Jeb Bush, former president George H.W. Bush and Sen. Marco Rubio (R-Fla.) -- clear signs that leaders across the Republican party are increasingly ready for the primary season to be over.