That’s the question at the center of a federal inquiry right now into Rep. Jesse Jackson Jr. In addition to being off the job for months as he is treated for a mental disorder, Jackson is now being investigated by the FBI:

The Chicago Sun-Times on Friday first reported that Jackson was under federal investigation, a probe that began before he took a leave from Congress in June to seek medical help. Ultimately, the Jacksons said he suffered from bipolar depression.

The Sun-Times reported that the investigation was being handled out of Washington D.C. and was an entirely new area of scrutiny and did not involve the sale of the U.S. Senate seat — a case involving Rod Blagojevich where Jackson’s name repeatedly came up. Spokespeople representing Jackson were not talking on Sunday.

The Jacksons put their Washington, D.C., home on the market last month at a price of $2.5 million. The listing was public and included the property’s address as well as multiple photos of the inside of the home. A campaign spokesman said at the time that home was put on the market to pay for mounting medical bills.