The Obama administration on Monday disputed a U.N. official's initial claim that opposition forces -- and not the Assad regime -- may have been the ones who used chemical weapons in Syria, as U.N. investigators began to walk back the controversial comments. 

The Pentagon for the first time used its annual report on China to directly assert that Beijing's government and military have conducted computer-based attacks against the U.S., including efforts to steal information from federal agencies.

The U.S. military could have prevented one wave of the deadly attack on American personnel in Benghazi if fighter jets had been promptly deployed, a top diplomatic official who was in Benghazi during the Sept. 11 assault told congressional investigators. 

A high-pressure vote on generally popular legislation that arouses deep passions among ideological activists and is doomed to failure in the House: Not a recipe for success in the U.S. Senate.

The comprehensive immigration overhaul being taken up in the Senate this week could cost taxpayers $6.3 trillion if 11 million illegal immigrants are granted legal status, according to a long-awaited estimate by the conservative Heritage Foundation. 

Former New Mexico Gov. Bill Richardson said Sunday that Republican Sen. Ted Cruz, whose father was a Cuban immigrant, should not be "defined as a Hispanic" because of his stance on immigration legislation.