In case you didn’t notice our link in the box, the Sun-Times reports a congressional investigation into Jesse Jackson, Jr. (D, Ill.), pertaining to Rod Blagojevich’s alleged attempt to sell Roland Burris’s Senate seat.

Jesse Jackson Jr. has not been accused of wrongdoing in the Blagojevich case. He was referred to as “Candidate A” in the indictment of Blagojevich and was recently interviewed by the feds. Blagojevich believed he would be paid $1.5 million through Jackson Jr. “emissaries” if he named Jackson to the Senate seat, according to the federal charges.

Jackson tells the Associated Press today that he is cooperating.