New Jersey Governor Chris Christie said "there is no justification" for the behaviour of his former aide Bridget Kelly's over the bridge scandal.
Christie, a possible Republican White House contender, told a news conference, "There is no justification for ever lying to a governor or a person in authority in this Government".
More top news
Andy Murray is through to Australian Open final after beating Tomas Berdych three sets to one in a thrilling semi-final
Figures released from the Department of Education show how more than 5,000 schools performed last year.
Police in France question eight-year-old boy after he allegedly made comments in school in praise of terrorists, according to media reports.