US Republican presidential candidate and

ryan US Republican presidential candidate and

US Republican presidential candidate and former Massachusetts Governor Mitt Romney announces Wisconsin Representative Paul Ryan(R) as his vice presidential running mate during a campaign rally at the Nauticus Museum after touring the USS Wisconsin in Norfolk, Virginia, August 11, 2012. Romney and his new running mate embark on the first day of a 4-day bus trip that will take the White House hopefuls to 4 key swing states, Virginia, North Carolina, Florida and Ohio. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/GettyImages)