Some secret donors who gave money to groups that paid for millions of dollars in attack ads during the 2010 midterm elections are becoming public.
Chevron Corp. (CVX), an oil and gas company; Merck & Co. (MRK), a drug maker; and the American Petroleum Institute are among the entities that have disclosed through corporate filings or Internal Revenue Service reports their donations to politically active groups that are growing in influence.
via bloomberg.com
