Congressman Jesse Jackson Jr. has been under treatment for bipolar disorder at the Mayo Clinic. (Photo By Flickr user chicagopublicmedia)

By Metro News

Washington, DC - Rep. Jesse Jackson Jr.'s days as a U.S. Congressman may be over.

Sources tell The Chicago Sun-Times the Chicago Democrat will not return to Washington D.C. after going on medical leave in June. Jackson has made at least two trips to the Mayo Clinic in Minnesota for treatment of bipolar disorder. He was released on Tuesday.

Jackson is also under federal investigation for allegedly using campaign funds to buy gifts and do repairs to his home.  He's reportedly working on a plea deal with prosecutors.