For decades, tobacco companies have been major donors to the 43-member caucus. Altria, the parent company of Philip Morris, has donated $1.45 million to the group since 2002.  The bucks don't stop there, either.  Though some caucus members, such as Rep. John Lewis, D-Ga., do not accept tobacco company contributions, others do. This fact should disturb blacks, who are at increased risk for lung cancer  compared with whites, according to the American Lung Association.