CHICAGO — Embattled Illinois Sen. Roland Burris said Friday he won't run for a full term in 2010, making official the end of a short Senate career clouded by questions about his appointment by disgraced former Gov. Rod Blagojevich. Burris, the only black U.S. senator, said he was bowing out of the 2010 race because of the burden of raising money to pay for a campaign. "I was called to choose between spending my time raising funds, or spending my time raising issues for my state.