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FILE - In this Jan. 3, 2013, file photo, Vice President Joe Biden administers the Senate Oath to Sen. Joe Manchin, D-W.Va., accompanied by his wife Gayle and Sen. Jay Rockefeller, D-W.Va., during a mock swearing in ceremony on Capitol Hill in Washington. Senate Democrats are approaching decision time on whether they can get Republican support for expanding background checks for firearms sales or will have to take the shakier path of pursuing the cornerstone of the gun control effort on their own. Democrats were to meet Tuesday, April 9, 2013, to discuss whether Manchin has been able to reach compromise with Republican Sen. Pat Toomey of Pennsylvania. (AP Photo/Cliff Owen, File)

Associated Press
FILE - In this Jan. 3, 2013, file photo, Vice President Joe Biden administers the Senate Oath to Sen. Joe Manchin, D-W.Va., accompanied by his wife Gayle and Sen. Jay Rockefeller, D-W.Va., during a mock swearing in ceremony on Capitol Hill in Washington. Senate Democrats are approaching decision time on whether they can get Republican support for expanding background checks for firearms sales or will have to take the shakier path of pursuing the cornerstone of the gun control effort on their own. Democrats were to meet Tuesday, April 9, 2013, to discuss whether Manchin has been able to reach compromise with Republican Sen. Pat Toomey of Pennsylvania. (AP Photo/Cliff Owen, File)
FILE - In this Jan. 3, 2013, file photo, Vice President Joe Biden administers the Senate Oath to Sen. Joe Manchin, D-W.Va., accompanied by his wife Gayle and Sen. Jay Rockefeller, D-W.Va., during a mock swearing in ceremony on Capitol Hill in Washington. Senate Democrats are approaching decision time on whether they can get Republican support for expanding background checks for firearms sales or will have to take the shakier path of pursuing the cornerstone of the gun control effort on their own. Democrats were to meet Tuesday, April 9, 2013, to discuss whether Manchin has been able to reach compromise with Republican Sen. Pat Toomey of Pennsylvania. (AP Photo/Cliff Owen, File)
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