New Jersey Governor Chris Christie said he has fired a top aide "because she lied to me".
Christie said the termination of Bridget Kelly's employment was "effective immediately".
Kelly had been Christie's deputy chief of staff for legislative and intergovernmental affairs.
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Social workers across England have blown the whistle on a "threadbare" care system.
The world is facing a "global health emergency", according to the World Health Organisation (WHO).
A 25-year-old man has been arrested in Newport, South Wales, in connection with the Parsons Green terror attack, Scotland Yard said.