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

itoggle caption Harry Hamburg/AP

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

itoggle caption Scott Olsen/Getty Images