Former Congressman Jesse Jackson, Jr. isn't the only member of his family in trouble with the law. The Chicago Sun Times is reporting that his wife, alderman Sandi Jackson, is the subject of a federal investigation that is probing the couple's use of Jesse's campaign war chest.

A federal financial probe of the once-politically powerful Jesse and Sandi Jackson has evolved into two separate investigations, with federal authorities taking an independent look at former Ald. Sandi Jackson, sources close to the probe told the Chicago Sun-Times.

Included in the scrutiny of Sandi Jackson, who resigned from her 7th Ward aldermanic position last month, is her access and use of her husband's congressional campaign money, including credit card charges, as well as the movement of money from one account to another, sources say.

In his resignation letter, Jesse Jackson Jr. acknowledged a federal probe and indicated his attorneys were working with federal authorities on it. For Sandi Jackson, however, sources cautioned that the feds are still weighing whether charges are warranted and noted that prosecutors do take into account - in a financial probe - charging husband and wife who are also a mom and a dad. The couple has school-aged children.

"They are trying to sort it out right now and trying to figure out exactly what to do with her," said one source close to the former alderman. Sandi Jackson was advised to get a lawyer at least four months ago.

As recently as December, Sandi Jackson was mentioned prominently as a potential candidate to replace her husband in Congress. But the investigation by the feds has scotched those rumors and both husband and wife are now in the crosshairs of the federal prosecutor.