June, 2010: Jackson's wife, Chicago Alderman Sandi Jackson, reveals that her husband had an affair with a Washington nightclub hostess, something he later called "a private and personal matter between me and my wife."
June 8, 2012: Jackson casts his final vote in the House, according to The Washington Post Votes Database. Over the course of his congressional career, Jackson missed only a handful of votes.
June 25, 2012: Jackson's office formally announces that he's been on medical leave since June 10.
July 7, 2012: Jackson's office reveals that the congressman is being treated for a mood disorder. News reports later confirm he is at the Mayo Clinic in Minnesota.
Aug. 17, 2012: Aides release a photograph of Jackson visiting with former Rep. Patrick Kennedy, D-Mass.. Both men have much in common as the sons of famous political fathers, who launched their own political careers and later sought treatment for mental illness.
Sept. 19, 2012: Jackson announces he is selling his multimillion dollar Dupont Circle-area home to help defray medical costs.
Nov. 21, 2012: Jackson formally resigns from Congress and signals in an emotional resignation letter that he is in talks with the Justice Department about striking a plea agreement.
Feb. 20, 2013: In federal court, Jackson admits to spending approximately $750,000 in campaign money on high-end items, including a Rolex watch, furs and pop-culture memorabilia. He pleaded guilty to one felony count of conspiracy to commit false statements, mail fraud and wire fraud and faces a federal prison sentence ranging from 46 to 57 months.
As he leaves the courtroom, Jackson sees veteran Chicago political reporter Lynn Sweet and tells her: "Tell everybody back home, I'm sorry I let them down, okay?"