Federal Reserve Chairman Ben Bernanke listens during the Senate Banking, Housing and Urban Affairs hearing on his nomination for another term as head of the nation's central bank on Dec. 3. Jim Watson/Getty Images hide caption

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Majority Leader Harry Reid of Nevada listens as Connecticut Sen. Christopher Dodd (left) speaks during a Democratic health care rally on Capitol Hill on Tuesday. Harry Hamburg/AP hide caption

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Lipitor, one of the world's top-selling drugs, sells for $125 in the United States, while in Canada it costs $33, according to Sen. Bernie Sanders (I-VT). Scott Olsen/Getty Images hide caption

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