TRENTON, N.J. - New Jersey Gov. Chris Christie is apologizing for George Washington Bridge lane closures apparently ordered by his aides as political retribution.

Christie vehemently denied having any knowledge of the alleged plan to bring Fort Lee to a standstill after its mayor refused to endorse him for re-election. He said that he was "embarrassed and humiliated" by his staff, but that he accepted responsibility.

The governor fired Deputy Chief of Staff Bridget Anne Kelly, saying that she lied to him. She has been linked to emails ordering the highway traffic jams.

Some of Christie's opponents say that the "bridge gate" scandal calls into question his potential for a presidential run in 2016.