Christie apologizes, fires key aide

New Jersey Gov. Chris Christie speaks during a news conference Thursday, Jan. 9, 2014, at the Statehouse in Trenton, N.J. Christie has fired a top aide who engineered political payback against a town mayor, saying she lied. Deputy Chief of Staff Bridget Anne Kelly is the latest casualty in a widening scandal that threatens to upend Christie's second term and likely run for president in 2016. Documents show she arranged traffic jams to punish the mayor, who didn't endorse Christie for re-election.   (AP Photo/Mel Evans)

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    Christie apologizes, fires key aide

Gov. Chris Christie apologizes for his office's part in a planned traffic jam and says the aide behind it has been fired.