AP - It's been eight years, but many Democrats still bristle at the thought of Ralph Nader's 2000 run for the presidency. And they're not especially forgiving toward anyone who helped him, either.

AP - Sen. Edward M. Kennedy enjoyed "a restful night's sleep" and was walking hospital hallways on Tuesday, one day after undergoing an aggressive brain surgery aimed at slicing away at a cancerous tumor to give chemotherapy and radiation treatments a chance to work.

AP - Sen. Robert C. Byrd, 90, will remain hospitalized for several more days for treatment of a mild infection, his office said Tuesday.

AP - A House committee chairman said Tuesday he is seeking more documents from the CIA leak probe because Vice President Dick Cheney's former chief of staff made a significant disclosure to the FBI that warrants further congressional follow-up.

AP - After investigating all his options with his trademark intensity, Sen. Edward M. Kennedy underwent 3 1/2 hours of risky and exquisitely delicate surgery Monday to cut out as much of his cancerous brain tumor as possible.

Reuters - South Carolina Rep. James Clyburn, the third-ranking Democrat in the U.S. House of Representatives, is endorsing Barack Obama for president, his office said on Monday.

AP - The Senate began what is expected to be a weeklong, contentious debate Monday over legislation to combat global warming by mandatory reductions in carbon dioxide and other greenhouse gases.