Sen. Dianne Feinstein, D-Calif. is seen in an elevator on Capitol Hill in Washington, Wednesday, April 17, 2013, after speaking on the Senate floor about gun legislation. A bipartisan e

 

              Sen. Dianne Feinstein, D-Calif. is seen in an elevator on Capitol Hill in Washington, Wednesday, April 17, 2013, after speaking on the Senate floor about gun legislation. A bipartisan e
Sen. Dianne Feinstein, D-Calif. is seen in an elevator on Capitol Hill in Washington, Wednesday, April 17, 2013, after speaking on the Senate floor about gun legislation. A bipartisan effort to expand background checks was in deep trouble Wednesday as the Senate approached a long-awaited vote on the linchpin of the drive to curb gun violence. (AP Photo/Charles Dharapak)