Sen. Ron Johnson (R-Wis.), left, the senator who former Secretary of State Hillary Clinton yelled at during a senate hearing on the attacks in Benghazi, speaks with Rep. Louie Gohmert (R-Texas), right, before a House Oversight and Government Reform Committee hearing on the September 11, 2012 attack in Benghazi, Libya on Capitol Hill, Washington, D.C., Wednesday, May 8, 2013. (Andrew Geraci/The Washington Times)
Sen. Ron Johnson (R-Wis.), right, the senator who former Secretary of State Hillary Clinton yelled at during a senate hearing on the attacks in Benghazi, and Rep. Louie Gohmert (R-Texas), center, arrive before a House Oversight and Government Reform Committee hearing on the September 11, 2012 attack in Benghazi, Libya on Capitol Hill, Washington, D.C., Wednesday, May 8, 2013. (Andrew Harnik/The Washington Times)
Sen. Dianne Feinstein, D-Calif. waits for an elevator on Capitol Hill in Washington, Wednesday, April 17, 2013, after speaking about gun legislation on the Senate floor. 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. (Associated Press)
Sen. Dianne Feinstein, D-Calif. waits for an elevator on Capitol Hill in Washington, Wednesday, April 17, 2013, after speaking about gun legislation on the Senate floor. 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. (Associated Press)
Sen. John McCain, R-Ariz., laughs as he and Sen. Chuck Schumer, D-N.Y., left, cross paths at competing TV news interviews just before a vote in the Senate on legislation to collect sales tax on internet purchases, on Capitol Hill in Washington, Monday, May 6, 2013. (Associated Press)
Sen. John McCain, R-Ariz., laughs as he and Sen. Chuck Schumer, D-N.Y., left, cross paths at competing TV news interviews just before a vote in the Senate on legislation to collect sales tax on internet purchases, on Capitol Hill in Washington, Monday, May 6, 2013. (Associated Press)
Thousands of people march during a May Day immigration rally in Los Angeles on Wednesday. The Senate is crafting an immigration reform bill. (Associated Press photographs)
The Senate's bipartisan "Gang of Eight" holds a news conference on Capitol Hill in Washington on Thursday, April 18, 2013. In front from left to right are Sen. Marco Rubio, Florida Republican; Sen. Charles E. Schumer, New York Democrat; Sen. Lindsey Graham, South Carolina Republican; and Sen. John McCain, Arizona Republican. The legislation would dramatically remake the U.S. immigration system by ushering in new visa programs for low- and high-skilled workers, requiring a tough new focus on border security, instituting a new requirement for all employers to check the legal status of their workers, and installing a path to citizenship for 11 million immigrants in the country illegally. (AP Photo/J. Scott Applewhite)
Sen. Joe Manchin III, West Virginia Democrat (right), a lifelong hunter and NRA member, plans to "go to every gun show" in the country in his effort to convince doubters including NRA members of the Senate background-check bill's merit.
