A sweeping 19-count federal indictment alleges that Blagojevich discussed with aides the possibility of getting a Cabinet post in the new president's administration, substantial fundraising assistance or a high-paying job in exchange for the Senate seat.
Obama's deputy press secretary, Josh Earnest, said the White House would not comment. The indictment does not allege any wrongdoing by Obama or his associates.
Prosecutors also accused Blagojevich and of scheming to line their pockets with millions of dollars in ill-gotten gains, squeezing contractors, hospital owners and others seeking state business for kickbacks they planned to split after the governor left office.
"I'm saddened and hurt but I am not surprised by the indictment. I am innocent," Blagojevich said in a statement. "I now will fight in the courts to clear my name. I would ask the good people of Illinois to wait for the trial and afford me the presumption of innocence that they would give to all their friends and neighbors."
His brother, two former aides, a former fundraiser and a lobbyist were also indicted. Blagojevich's wife, Patti, was not indicted.
According to the indictment, the corruption stretches back to when Blagojevich became governor in 2003. He and three coconspirators agreed then to use his position for financial gain and split the proceeds after he left office, the indictment said.
The indictment alleges that Blagojevich:
_Told an aide he wanted to stall a $2 million state grant to a school supported by a congressman until the lawmaker's brother held a fundraiser for the governor. The congressman's identity wasn't released.
_Was involved in a corrupt scheme to get a massive kickback in exchange for the refinancing of billions of dollars in state pension funds.
_Told an aide he didn't want executives with two financial institutions getting further state business after he concluded they were not helping his wife get a high-paying job.
_Withheld state aid sought by the Tribune Co. unless the company fired unfriendly editorial writers at the Chicago Tribune.
Also, convicted fixer Tony Rezko paid Patti Blagojevich a $14,396 real estate commission "even though she had done no work" to earn it and later hired her at a salary of $12,000 a month plus another $40,000 fee, the indictment said.
Others charged were former chief of staff Alonzo Monk; another former chief of staff, John Harris; brother ; onetime chief fundraiser Christopher G. Kelly; and Springfield lobbyist-millionaire William F. Cellini.
Prosecutors said Harris has agreed to cooperate.
Blagojevich faces 16 counts of wire fraud, racketeering and extortion conspiracy, attempted extortion and making false statements. Most of those carry a maximum sentence of 20 years in prison and a $250,000 fine.
Blagojevich, 52, was arrested Dec. 9 on a criminal complaint and had faced a Tuesday deadline to supplant it with an indictment handed up by a . The Democrat's arrest led to his political downfall: The Illinois House impeached him Jan. 9. The Senate convicted him and removed him from office Jan. 29.
Blagojevich's administration has been under federal investigation for years and Kelly and Rezko already have been convicted of federal crimes and are awaiting sentencing.
Thursday's indictment said that in 2003, Blagojevich, Monk, Kelly and Rezko agreed to direct big-money state business involved in refinancing billions of dollars in pension bonds as part of a deal with a lobbyist who promised a massive kickback in return. The lobbyist wasn't identified.
Rezko raised more than $1 million in campaign contributions for Blagojevich and also was a major Obama fundraiser.