Ousted Illinois Gov. Rod Blagojevich deserves a sentence of 15 to 20 years in prison for his convictions on corruption charges, federal prosecutors said Wednesday. Prosecutors said Blagojevich, who was convicted of 18 corruption-related counts including that he tried to sell or trade the U.S. Senate seat vacated by President Barack Obama, should receive more time than his predecessor, former Gov. George Ryan, and a key former fundraiser, Tony Rezko.