Implications of Rezko Letter Concerning Obama and Blagojevich

The Chicago Sun-Times reports:

A day after prosecutors revealed his former adviser and fund-raiser is in talks with them, Gov. Blagojevich says he isn't worried.

Blagojevich pointed to a letter Tony Rezko wrote to U.S. District Judge Amy St. Eve earlier this year saying he was under pressure to say "the wrong things" about Blagojevich and Democratic Presidential nominee Barack Obama.
"Tony Rezko sent a letter to a judge. In that letter, he expressly states neither Sen. Obama nor I did anything wrong," Blagojevich told reporters this morning.
"That letter is a pretty strong statement. It speaks for itself."
Shortly after the letter was publicized, Rezko's lawyers said Rezko had never spoken to prosecutors.
That changed following Rezko's June conviction on corruption charges.
If Rezko does cut a deal with the feds, that letter -- sent to a federal judge -- will no doubt haunt him as a witness.
As we reported in an earlier story, it isn't necessarily a deal breaker.
Former prosecutor Zachary Fardon noted in a June 16th story Scott Fawell, former chief of staff to Gov. George Ryan, wrote a similar letter, saying he wouldn't make up lies about Ryan.
Fawell was the star witness in Ryan's trial.
"Do I think he could effectively be crossed on this letter? Yes," Fardon said. "Does that mean they can't call him or use him [as a witness]? No."

No word yet from the Obama campaign on this one.