Photos: America's Toughest Sheriff at Work

Maricopa County Sheriff's Office aggressively arrests illegal immigrants.

Taking on Illegal Immigration

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Sheriff Arpaio has set up a hot line, where people can leave information or evidence about crimes involving illegal immigration. Arpaio says from 2,200 calls the hot line has received, his deputies have arrested about 90 illegal immigrants.

"The message I like to send out to those that have committed crimes, including illegal aliens that come into this county illegally, is don't come into this county," he said. "Go somewhere else." (Jeffrey Kofman/ABC News)

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