FILE - In this July 16, 2013 file photo, Sen. Tim Kaine, D- Va. listens to testimony during a hearing on Capitol Hill in Washington. Kaine and Sen. John McCain, R-Ariz. unveiled legislation on Thursday that would repeal the 1973 War Powers Resolution, often ignored by presidents of both parties, and replace it with a new law that requires greater consultation and a congressional vote within 30 days on any significant armed conflict. (AP Photo/Jacquelyn Martin, File)