John Kerry

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Sen. John F. Kerry of Massachusetts has said he will offer an amendment to the farm bill to eliminate the new FSIS catfish-inspection office. (Associated Press)

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Sen. John F. Kerry, Massachusetts Democrat, is at the fore of his party's donation campaign.

Sen. John Kerry, D-Mass., left, talks with Sen. Scott Brown, R-Mass., right, and Sen. Thomas Carper, D-Del., prior to the start of President Barack Obama's State of the Union address. Kerry recently suffered a broken nose while playing hockey. (AP Photo/Evan Vucci)

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** FILE ** In this photo provided by NBC News, Sens. John Kyle, R-Ariz., and John Kerry, D-Mass., members of the Joint Select Committee on Deficit Reduction, talk about the status of committee work on Sunday, Nov. 20, 2011, in Washington. (AP Photo/NBC News, William B. Plowman)

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Supercommittee member, Senate Finance Committee Chairman Sen. Max Baucus, Montana Democrat, fends off reporters as he arrives to meet in the Capitol Hill office of Sen. John Kerry, Massachusetts Democrat, with other Supercommittee members as time for action by the deficit reduction panel grows short, Monday Nov. 21, 2011, of Capitol Hill in Washington. (AP Photo/J. Scott Applewhite)

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Supercommittee member Sen. John Kerry, Massachusetts Democrat, gestures Nov. 21, 2011, during a TV interview on Capitol Hill about the deficit reducing panel's unfinished work. (Associated Press)

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Sen. John Kerry, Massachusetts Democrat, emerges from a closed-door meeting with fellow Democratic members of the supercommittee at the Capitol on Nov. 16, 2011. (Associated Press)

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"I believe this is, without question, the tea party downgrade." -- Sen. John F. Kerry, Massachusetts Democrat, said on NBC's "Meet the Press." (Associated Press)

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Senate Foreign Relations Committee Chairman John F. Kerry of Massachusetts is advocating for ratification of the controversial Law of the Sea Treaty. (Associated Press)

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Sen. John Kerry (left), chairman of the Senate Foreign Relations Committee, and Sen. Richard G. Lugar, the ranking Republican on the panel, listen to testimony during a committee hearing on Libya and the War Powers Resolution on Capitol Hill in Washington on Tuesday, June 28, 2011. (Drew Angerer/The Washington Times)

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Secretary of State Hillary Rodham Clinton talks on June 23, 2011,with Senate Foreign Relations Committee Chairman John Kerry (left), Massachusetts Democrat, and the committee's ranking Republican, Sen. Richard Lugar of Indiana, on Capitol Hill prior to testifying before the committee on American policies in Afghanistan and Pakistan. (Associated Press)

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ASSOCIATED PRESS Senate Foreign Relations Committee Chairman John Kerry, Massachusetts Democrat, makes his way to the Senate floor, where he introduced a bipartisan resolution Tuesday to authorize continued use of "limited" U.S. military force in Libya. The resolution is co-sponsored by Sen. John McCain, Arizona Republican.

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Senate Foreign Relations Committee Chairman John Kerry, Massachusetts Democrat, walks to the floor of the Senate on Capitol Hill on June 21, 2011, where he introduced a bipartisan resolution to authorize continued use of "limited" U.S. military force in Libya. (Associated Press)

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Ryan C. Crocker (left) and Senate Foreign Relations Committee Chairman John Kerry greet each other Wednesday before a two-hour hearing on Mr. Crocker's nomination to be the next U.S. ambassador to Afghanistan. (Associated Press)

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Pakistani Prime Minister Yusuf Raza Gilani (right) greets U.S. Sen. John Kerry before their official talks at the prime minister's residence in Islamabad, Pakistan, on Monday, May 16, 2011. Mr. Kerry says the U.S. relationship with Pakistan is at a "critical moment" because of the killing of Osama bin Laden in the Pakistani town of Abbottabad on May 2. (AP Photo/B.K. Bangash)

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Sen. John Kerry, Massachusetts Democrat, arrives for a press conference at the U.S. Cmbassy in Kabul, Afghanistan, on Sunday, May 15, 2011. Mr. Kerry said the U.S. relationship with Pakistan is at a "critical moment" because of the killing of Osama bin Laden. (AP Photo/Musadeq Sadeq)