By Natasha Korecki
Federal agents from Washington D.C. visited Chicago as recently as last week interviewing witnesses about former U.S. Rep. Jesse Jackson Jr., a source with direct knowledge of the effort told the Chicago Sun-Times.
"They're still investigating. They're questioning people to corroborate," Jackson's statements to federal authorities, said the source.
The feds were questioning witnesses about activity in Jackson's congressional campaign fund including for transactions specifically in 2009, 2010 and 2011, the source said.
Sources said the 17-year South Shore congressman signed a plea deal last week that acknowledges wrongdoing with respect to misusing his campaign fund.
The source said that Jackson had told others that he tried "protecting" his wife, Sandi Jackson, but "they wouldn't let him."
Earlier this week, the Sun-Times reported that Sandi Jackson is now the target of a separate investigation by federal officials.
Two sources with knowledge of that probe say that authorities believe Sandi Jackson had direct knowledge of alleged misuse of campaign money.
The investigation continues to stun those close to Jackson, who was a target of a different federal probe back in 2008 and 2009, involving Rod Blagojevich's attempted sale of Barack Obama's vacant U.S. Senate seat. The Sun-Times first reported in 2010 that a fund-raiser with long ties to the Jackson family told federal authorities that Jackson in October of 2008 had directed him to approach the Blagojevich camp with a $6 million offer for the Senate seat. However, that fund-raiser, Raghuveer Nayak, alleged the conversation was private. Nayak also told authorities that at Jackson's behest, he secretly paid for airline trips for a Jackson female friend to fly from Washington to Chicago.
Nayak himself is now under indictment for conduct involving surgical centers he owns in Illinois and Indiana.