John Mccain

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Senate Armed Services Committee Chairman Sen. Carl Levin, D-Mich., center, flanked by the the committee's ranking Republican Sen. John McCain, R-Ariz., right, and Sen. Joseph Lieberman, I-Conn., listens to testimony on Capitol Hill in Washington Thursday, Dec. 2, 2010, during the committee's hearing on the military Don't Ask Don't Tell policy. (AP Photo/Alex Brandon)

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Sen. John McCain, R-Ariz., the ranking member of the Senate Armed Services Committee, walks on Capitol Hill in Washington Tuesday, Nov. 30, 2010, as committee staff members are receiving a briefing on the Armed Services Don't Ask Don't Tell survey. (AP Photo/Alex Brandon)

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ASSOCIATED PRESS PHOTOGRAPHS Sen. John McCain (center) leads a news conference on Capitol Hill on Tuesday prior to the Senate vote on the defense authorization bill. From left: Senate Minority Leader Mitch McConnell, Sen. Lamar Alexander, Sen. John Cornyn, Sen. John Thune and Senate Minority Whip Jon Kyl.

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Sen. Mark Pryor and Sen. Blanche Lincoln, Arkansas Democrats, joined with Republicans in the filibuster, which led Sen. John McCain, the ranking Republican on the Armed Services Committee, to declare the filibuster effort bipartisan.

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ASSOCIATED PRESS PHOTOGRAPHS Sen. John McCain (center) leads a news conference on Capitol Hill on Tuesday prior to the Senate vote on the defense authorization bill. From left: Senate Minority Leader Mitch McConnell, Sen. Lamar Alexander, Sen. John Cornyn, Sen. John Thune and Senate Minority Whip Jon Kyl.

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Sen. Mark Pryor and Sen. Blanche Lincoln, Arkansas Democrats, joined with Republicans in the filibuster, which led Sen. John McCain, the ranking Republican on the Armed Services Committee, to declare the filibuster effort bipartisan.

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US Marines Gen. James F. Amos , left, shakes hands with the Senate Armed Services Committee ranking Republican Sen. John McCain, R-Ariz., on Capitol Hill in Washington, Tuesday, Sept. 21, 2010, prior to testifying before the committee's hearing on his nomination for reappointment to the grade of general and the be Commandant of the Marine Corps. Committee members, from left are, Sen. Daniel Akaka, D-Hawaii, Sen. Jack Reed, D-R.I., committee Chairman Sen. Carl Levin, D-Mich., and McCain. (AP Photo/Alex Brandon)

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Senate Armed Services Committee Chairman Sen. Carl Levin, D-Mich., left, and the committee's ranking Republican Sen. John McCain, R-Ariz., right, listen as US Marines Gen. James F. Amos, back to camera, testifies on Capitol Hill in Washington, Tuesday, Sept. 21, 2010, before the committee's hearing on Amos' reappointment to the grade of general and the be Commandant of the Marine Corps. (AP Photo/Alex Brandon)

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Sen. John McCain, Arizona Republican

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Former Rep. J.D. Hayworth has not publicly come out for Sen. John McCain after falling short in his challenge in the Senate primary in Arizona. ASSOCIATED PRESS PHOTOGRAPH

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TAKING THE FIFTH? Sen. John McCain, Arizona Republican, leaves the polling station Tuesday in Phoenix after casting his vote in the Arizona primary election in his bid for a fifth term.

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TAKING THE FIFTH? Sen. John McCain, Arizona Republican, leaves the polling station Tuesday in Phoenix after casting his vote in the Arizona primary election in his bid for a fifth term.

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Associated Press Arizona Sen. John McCain lends support Sunday in Centennial, Colo., to a fellow Republican, former Colorado Lt. Gov. Jane Norton, in her bid for the party's senatorial nomination in Tuesday's primary.

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Senate Armed Services Committee Chairman Sen. Carl Levin, D-Mich., left and the committee's ranking Republican Sen. John McCain, R-Ariz., right, question Marine Corps Gen. James Mattis, center, on Capitol Hill in Washington, Tuesday, July 27, 2010, during the committee's hearing on Mattis' nomination to head the U.S. Central Command. (AP Photo/Alex Brandon)

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The Senate Armed Services Committee's ranking Republican, Sen. John McCain, left, R-Ariz., left, accompanied by fellow committee members, Sen. Joseph Lieberman, I-Conn., and Sen. Lindsey Graham, R-S.C., walk to a news conference on Capitol Hill in Washington, Wednesday, June 23, 2010, to discuss the confirmation hearings for Gen. David Petraeus. (AP Photo/Alex Brandon)

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Senate Armed Services Committee members, from left, Sen. John McCain, R-Ariz., the committee's ranking Republican, Sen. Lindsey Graham, R-S.C., and Sen. Joseph Lieberman, I-Conn., take part in a news conference on Capitol Hill in Washington, Wednesday, June 23, 2010, to talk about confirmation hearings for Gen. David Petraeus. (AP Photo/Alex Brandon)