Joseph Michael Arpaio is a former American law enforcement officer. He was the elected Sheriff of Maricopa County, Arizona, from 1993 through 2016. Arpaio styled himself as "America's Toughest Sheriff". Starting in 2005, he took an outspoken stance against illegal immigration. Arpaio is also known for his investigation of former U.S. President Barack Obama's birth certificate, and his continuing claim that it is forged. Arpaio has been accused of...