Jesse L. Jackson Jr. Returning to Clinic for Checkup CHICAGO (AP) - Four months after taking medical leave, Representative Jesse L. Jackson Jr., who has given no hint of when he will return to work, will head back soon to the Mayo Clinic for a checkup, his father, the Rev. Jesse Jackson, said Sunday. M. Spencer Green/Associated Press Rep. Jesse Jackson Jr. was released in September from the Mayo Clinic. Mr. Jackson, a Democrat from Illinois, was released in September from the Mayo Clinic in Rochester, Minn., after seeking treatment for bipolar disorder and gastrointestinal issues. He has been with his family in Washington since, but has not appeared in public or campaigned for re-election, beyond a recent robocall. Nor has he said when he would return to Capitol Hill. His spokesmen would say only that Mr. Jackson remained on the Nov. 6 ballot. The senior Mr. Jackson said that his son would go back to the Mayo Clinic in the near future, but he would not say when or for how long. He said only that doctors could determine if his son could return home immediately or undergo more inpatient treatment. "He has not regained his balance altogether," Mr. Jackson said. But he's seeking his balance. He also said that his son had an "overwhelming desire to get back to work," but that any predictions were premature. A Mayo spokeswoman, Duska Anastasijevic, said that Mr. Jackson was not a current patient and that she could not confirm whether he planned to check into the clinic. Mr. Jackson's spokesman, Frank Watkins, said he did not have any further information. Many questions about Mr. Jackson's medical leave have gone unanswered. He first took medical leave in June for what his staff described as exhaustion, but the information was not disclosed until two weeks later. Since then, information has come in spurts. It took weeks for Mr. Jackson's office to say where and for what he was being treated. The timing of his leave has also drawn scrutiny. Just weeks from the election, Mr. Jackson remained under investigation by the House ethics committee for links to Rod Blagojevich, the imprisoned former governor. The committee is looking into allegations that Mr. Jackson was involved in discussions about raising money for Mr. Blagojevich's campaign in exchange for an appointment to the Senate seat left vacant when Barack Obama became president. And the announcement of the leave came just days after a former fund-raiser connected to those allegations was arrested on unrelated federal medical fraud charges. Mr. Jackson has repeatedly denied any wrongdoing and has said his name would be cleared. More recently, The Chicago Sun-Times reported that a federal inquiry related to his campaign finances was under way. Mr. Jackson, who first won office in a 1995 special election, faces two little-known candidates on the November ballot. He is widely expected to be re-elected to a ninth full term despite having not appeared in public for months. His Chicago-area district is heavily Democratic, and many community leaders and mayors have endorsed him. Mr. Jackson has said recently that he sees doctors twice a day while at the family's home in Washington. His wife, Sandi Jackson, has said that only doctors would be able to say when he could return to work. The congressman's first communication to the public since the leave came on Saturday in a robocall to voters in which he asked for patience. "I am anxious to return to work on your behalf, but at this time it is against medical advice," Mr. Jackson said in the recorded call. And while I will always give my all to my constituents, I ask for your continued patience as I work to get my health back.