FILE - In this Jan. 26, 2016, file photo, then-Republican presidential candidate Donald Trump is joined by Joe Arpaio, the then sheriff of metro Phoenix, during a news conference in Marshalltown, Iowa. The former Phoenix-area sheriff who was pardoned by President Donald Trump from his federal contempt-of-court conviction in an immigration case is experiencing a wobbly return to the public speaking circuit.In Las Vegas, security concerns prompted event planners to move Arpaio’s scheduled weekend appearance to an undisclosed location away from the casino-lined Strip tourist district. (AP Photo/Mary Altaffer, File)