Bernie Sanders

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** FILE ** Sen. Bernard Sanders, Vermont independent, speaks during a news conference on Capitol Hill in Washington on Dec. 6, 2012. (Associated Press)

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Sen. Charles E. Schumer (right), accompanied by (from left) Sens. Bernard Sanders, Tom Harkin and Chris Coons, gestures during a news conference on Capitol Hill in Washington on Thursday, Dec. 6, 2012, about the possibility of Americans abruptly losing their jobless benefits at the end of the year. (AP Photo/Jacquelyn Martin)

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U.S. Sen. Bernard Sanders, Vermont independent. (AP Photo/Rich Pedroncelli)

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Sen. Bernard Sanders of Vermont says the Pentagon has continued to pay contractors found to be defrauding the U.S. government. (Associated Press)

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"This is not a tax on the rich. This is a tax on the very, very, very rich," said Sen. Bernard Sanders. He delivered an eight-hour speech on Friday in opposition to President Obama's tax-cut deal with Republicans. (Associated Press)