In this July 8, 2015 file photo, Senate Majority Leader Mitch McConnell of Kentucky speaks to media after a policy luncheon on Capitol Hill in Washington. McConnell and other congressional leaders expressed doubts Sunday, July 12, 2015, about a historic agreement with Iran to address that country's nuclear program, predicting President Barack Obama could face hurdles in Congress if negotiators reach a final deal. Carolyn Kaster AP