Rezko also was friendly with Obama - offering him a job when he finished law school, funding his earliest political campaigns and purchasing a lot next to his house. But based on the known facts, charges so far and testimony at Rezko's trial, there's no indication there'll be an October surprise that could hurt the Democratic presidential nominee
- even though Rezko says prosecutors are pressing him for dirt about Obama.
"I think this strikes fear into the Blagojevich administration and the Statehouse Democrats but not into the Obama campaign," says state Sen. Kirk Dillard, R-Westmont, a John McCain delegate to the GOP convention but an old friend of Obama.
Rezko, 53, a real estate developer, was convicted in June of scheming to use his clout with the Blagojevich administration to squeeze $7 million in kickbacks out of a contractor and seven money management firms seeking to do business with the state.
Within two months, Rezko was seen in U.S. Attorney Patrick J. Fitzgerald's office, along with his attorneys.
There has been no official confirmation that Rezko is talking but his sentencing has been postponed indefinitely and both sides say they are going to "engage in discussions that could affect their sentencing postures."
"They never would have delayed the sentencing if he weren't talking
- it's proof positive," said Jay Stewart, executive director of the Better Government Association of Chicago.
In addition, attorneys say federal investigators have been questioning Blagojevich contributions around the state using information that only Rezko could have supplied. Finally, courthouse personnel requesting anonymity because grand jury probes are secret said Rezko has been repeatedly brought from his cell to the U.S. attorney's office to talk to prosecutors.
Rezko could have a lot to tell. He has raised millions of dollars in campaign money for many Illinois politicians and according to federal prosecutors used his clout to control appointments to state boards.
Obama has sent to charity $159,000 that Rezko raised for his campaigns for the state legislature, the House and the Senate. Rezko raised nothing for Obama's White House run.
Obama's name came up in testimony at the trial four times, twice in connection with an obscure legislative memo, as a guest at a Rezko party and when defense attorney Joseph Duffy told jurors his client was a friend of the senator.
None of the witnesses accused the Democratic nominee for president of doing anything improper.
But questions concerning Obama's relationship with Rezko linger, particularly over Rezko's role in the purchase of the Obamas' home.
The two have known each other for years, starting when Rezko offered Obama a job after he graduated from Harvard Law School in 1991. Obama didn't take it, but a friendship developed.