Witte Huis onder druk over Benghazi

President Barack Obama's administration fought back on Friday against Republican accusations that it covered up details of last year's deadly assault on a U.S. mission in Libya, after a news report that memos on the incident were edited to omit a CIA warning of a threat posed by al Qaeda.

The report by ABC News gave new momentum to the highly partisan flap over whether the administration tried to avoid casting the September 11, 2012, attack as terrorism at a time when the presidential election was less than two months away.