A complaint filed Monday in U.S. District Court in Nevada charges Michael Steven Sandford with an act of violence on restricted grounds. He was expected to appear in court later in the day as the investigation continued.
Authorities said Sandford went to a Trump rally on Saturday at the Treasure Island Casino and approached a Las Vegas police officer to say he wanted an autograph from Trump. The report says Sandford was arrested after grabbing the handle of an officer's gun in an attempt to remove it.
It wasn't immediately clear if he had an attorney. Las Vegas police say Sandford is 19.
He had a United Kingdom driver's license with him at the time, according to the complaint signed by Secret Service Special Agent Joseph Hall.
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