A federal judge in Phoenix on Wednesday dismissed the criminal case against Joe Arpaio and accepted President Donald Trump’s pardon of the former Arizona sheriff after his conviction for violating a court order to stop conducting immigration patrols.

Mr. Trump granted the pardon on Aug. 25, a month after a federal judge found Mr. Arpaio guilty of criminal contempt for defying a 2011 court order that prohibited his deputies from stopping and detaining Latinos without reasonable suspicion that a crime had been committed.

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