Vice President-elect Joseph R. Biden Jr. and Hillary Rodham Clinton, two of the most influential members of the Senate, said goodbye to their colleagues yesterday, while the chamber welcomed Illinois's Roland W. Burris, a man it had tried to keep out....

Presidential politics swept onto the floor of the Senate yesterday, as the three contenders took a rare break from the campaign trail to return to Washington, cast a few votes and spar over spending on government pork....

Presidential politics swept onto the floor of the Senate yesterday, as the three contenders took a rare break from the campaign trail to return to Washington, cast a few votes and spar over spending on government pork....