Blagojevich's claims on wiretaps that money funneled to Obama were not follow up

From the Chicago Tribune:

An upcoming book about Rod Blagojevich says undercover recordings caught the former governor saying he had heard that convicted influence peddler Antoin "Tony" Rezko secretly channeled $25,000 in cash to Barack Obama, but federal authorities did not deem the claim credible. . . . 

Blagojevich's claim about the money was caught on a government recording that was not made public during either of Blagojevich's trials, according to the book. The book, by Jeff Coen and John Chase, does not say who gave the recordings to the authors. 

The accusation of money paid indirectly to Obama is among many musings by Blagojevich that the FBI secretly recorded. Among the others: that Blagojevich mentioned naming Oscar-winning actress Halle Berry to Obama's vacant Senate seat so he could "have a shot" at having sex with her.  

Blagojevich, a Democrat, also told a staffer he voted for Republican George H.W. Bush for president and then gave the staffer a warning: "If you ever repeat this, first I'll deny it, secondly I'll wait a little bit, then I'll fire you." . . .