The American Future Fund, a conservative organization based in Iowa, has been one of the more active players in this fall's campaigns, spending millions of dollars on ads attacking Democrats across the country. It has not hesitated to take credit for its attacks, issuing press releases with headlines like "AFF Launches TV Ads in 13 States Targeting Liberal Politicians."

Like many of the other groups with anodyne names engaged in the battle to control Congress, it does not have to identify its donors, keeping them -- and their possible motivations -- shrouded from the public.

Read the entire New York Times article here.