AP - Osama bin Laden may be slipping back and forth from Pakistan to Afghanistan. Or the U.S. might not have a clue, more than eight years after the al-Qaida leader masterminded the terrorist attacks on America.

AP - Casting health care overhaul as a legacy for the American people and failure as politically unthinkable, President Barack Obama on Sunday rallied Senate Democrats to deliver on their party's half-century quest to expand the social safety net by providing access for all.

AP - Delegates converged Sunday for the grand finale of two years of tough, sometimes bitter negotiations on a climate change treaty, as U.N. officials calculated that pledges offered in the last few weeks to reduce greenhouse gases put the world within reach of keeping global warming under control.