John Mccain

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With less than a week before the nation's first presidential primary, former Massachusetts Gov. Mitt Romney (left) is joined onstage by Sen. John McCain in Manchester, N.H., on Wednesday, Jan. 4, 2012, as Mr. Romney gets the Arizona senator's endorsement in the Republican presidential race. (Rod Lamkey Jr./The Washington Times)

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With less than a week before the nation's first presidential primary, former Massachusetts Gov. Mitt Romney arrives on a GOP presidential campaign stop at Manchester Central High School in Manchester, N.H., on Wednesday, Jan. 4, 2012. (Rod Lamkey Jr./The Washington Times)

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Republican presidential candidate and former Massachusetts Gov. Mitt Romney (left), accompanied by Sen. John McCain, Arizona Republican, campaigns Jan. 4, 2012, during a town hall style meeting in Manchester, N.H. (Associated Press)

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**FILE** Sen. John McCain (right), Arizona Republican, answers questions on stage June 4, 2010, as he is joined by former Massachusetts Gov. Mitt Romney during a town hall meeting in Mesa, Ariz. (Associated Press)

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**FILE** Sen. John McCain (center), Arizona Republican and ranking Republican on the Senate Armed Services Committee, flanked by Senate Minority Whip Jon Kyl (left), Arizona Republican, and fellow committee member Sen. Kelly Ayotte, New Hampshire Republican, speaks Dec. 14, 2011, during a news conference on Capitol Hill to announce an effort to replace the defense sequester mandated as a result of the supercommittee's failure. (Associated Press)

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"We have to address it in a realistic fashion, and aid has to be gauged on the degree of cooperation that they are showing us and helping us prevent the needless deaths of young Americans. That's our first obligation." - Sen. John McCain of Arizona and ranking Republican on the Senate Armed Services Committee

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Sen. John McCain, Arizona Republican, asked for the government report that found that illegal immigrants caused a large percentage of the wildfires that have scarred areas of the Southwest along the border with Mexico. (Associated Press)

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** FILE ** Sen. Carl Levin (left), Michigan Democrat, chats with Sen. John McCain, Arizona Republican, during a hearing of the Senate Armed Services Committee on Tuesday, Nov. 15, 2011. (T.J. Kirkpatrick/The Washington Times)

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Sen. John McCain (R-Ariz.) speaks to an audience of Japanese-American veterans during a Congressional Gold Medal ceremony honoring the service of members in the 100th Infantry Battalion, 442nd Regimental Combat Team, and the Military Intelligence Service in the Capitol Visitors Center in Washington, D.C. on Nov. 2, 2011. (T.J. Kirkpatrick/ The Washington Times)

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Sen. John McCain (R-Ariz.) speaks to an audience of Japanese-American veterans during a Congressional Gold Medal ceremony honoring the service of members in the 100th Infantry Battalion, 442nd Regimental Combat Team, and the Military Intelligence Service in the Capitol Visitors Center in Washington, D.C. on Nov. 2, 2011. (T.J. Kirkpatrick/ The Washington Times)

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** FILE ** This Oct. 13, 2011, photo shows Sen. John McCain, R-Ariz., on Capitol Hill in Washington. McCain is recommending that a special committee searching for ways to slash the deficit consider some of President Barack Obama’s proposed changes to health and retirement benefits for the military. (AP Photo/Manuel Balce Ceneta)

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Sen. John McCain, Arizona Republican, speaks to reporters during a visit to Tripoli, Libya, on Thursday, Sept. 29, 2011. (AP Photo/Abdel Magid al-Fergany)

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Army Gen. Martin Dempsey is welcomed by Sen. John McCain, Arizona Republican, before testifying Tuesday before the Senate Armed Services Committee on his nomination to be chairman of the Joint Chiefs of Staff. "It's important that we place everything on the table, so that we can maintain balance at whatever level [of cuts] we end up at," he said of impending defense budge cuts. (Associated Press)

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** FILE ** Sen. Carl Levin (right), Michigan Democrat, and Sen. John McCain, Arizona Republican, confer before talking to the media about the Chinese government's failure to cooperate in an ongoing Senate Armed Services Committee investigation into counterfeit parts in the Department of Defense's supply chain, on Capitol Hill in Washington on Tuesday, June 14, 2011. (Associated Press)

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Sen. John McCain (Associated Press)

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A convoy takes Sen. John McCain from the Tebisty Hotel in Benghazi, Libya, on Friday before meeting with rebel leaders. Mr. McCain, the top Republican on the Senate Armed Services Committee, said the United States and other nations should recognize the opposition's political leadership as the "legitimate voice of the Libyan people." (Associated Press)