Washington - Roland Burris was sworn in Thursday to succeed president-elect Barack Obama as the junior senator from Illinois, bringing an end to weeks of controversy over the appointment.
Vice President Dick Cheney administered the oath of office for Burris, the 71-year-old Democrat who had been initially turned back when Congress began its new session on January 6.
With his swearing-in, Burris became the only African-American in the Senate, as was Obama.