New Jersey Governor Chris Christie said he is "embarrassed and humiliated" by conduct of some people on his team following a scandal over his staff's alleged role in shutting down lanes onto the busy George Washington Bridge to punish a mayor.
Christie said, "There is no doubt in my mind that the conduct that they exhibited is completely unacceptable and showed a lack of respect for the appropriate role of government and for the people that we are trusted to serve".
Christie, a possible Republican White House contender, held a news conference after he became enmeshed in the scandal.
More top news
The newsreader Sian Williams has revealed that she has had a double mastectomy after being diagnosed with breast cancer.
A man has been arrested under the Psychoactive Substances Act 2016, less than 24 hours after it came into force, banning 'legal highs'.
Dozens of people are feared to have died after a migrant boat capsized in the Mediterranean off the Libyan coast.