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UNITED STATES - FEBRUARY 22: Maricopa County (Ariz.) Sheriff Joe Arpaio speaks during the Donald Trump campaign rally at the South Point Hotel & Casino in Las Vegas on Monday, Feb. 22, 2016. (Photo By Bill Clark/CQ Roll Call)

UNITED STATES - FEBRUARY 22: Maricopa County (Ariz.) Sheriff Joe Arpaio speaks during the Donald Trump campaign rally at the South Point Hotel & Casino in Las Vegas on Monday, Feb. 22, 2016. (Photo By Bill Clark/CQ Roll Call)

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