New Jersey Governor Chris Christie has said he is still looking into the possibility that other members of his staff were involved in the scandal over shutting down lanes onto the busy George Washington Bridge.
Christie said he will "take action" if it is needed.
More top news
Former BBC Apprentice contestant Stuart Baggs has died, aged 27, a spokesman has said.
Tonight: a woman awaiting a double hand transplant, a dream realised through strangers, and a family who quit their life to travel Britain.
In the three years since Liam Lyburd was expelled from Newcastle College he built up an anger and resentment for the college.