Each spring, about 28,000 cardiologists gather at the annual meeting of the American College of Cardiology. But the medical society's planned meeting in Orlando in 2009 has attracted the attention of a prominent member of Congress, who is investigating a sponsor's financial ties to the medical device industry for possible conflict of interest. Wisconsin Sen. Herb Kohl has sent a letter to the president of the American College of Cardiology requesting information about the group's recently announced five-year partnership with the Cardiovascular Research Foundation.