I think he ought to stay away from this one. Politico:
Kirk already is popular in the politically competitive Chicago suburbs he represents and has a strong relationship with the state’s pro-Israel voters and donors.
His campaign did not respond to a query about whether he would welcome an endorsement from Jackson, who is the son of two-time Democratic presidential candidate Jesse Jackson Sr. The younger Jackson has been subpoenaed by defense lawyers to testify in Illinois Gov. Rod Blagojevich’s corruption trial after prosecutors alleged that Blagojevich wanted to extract campaign contributions from other individuals in exchange for appointing Jackson to a Senate seat.
I used to think better of Jesse Jr. until I knew more. He still looks good in comparison to his father.