Feds End Investigation of Sheriff Arpaio

Federal authorities said Friday that they're closing their abuse-of-power investigation into Maricopa County Sheriff Joe Arpaio in Arizona without filing charges against him.

Authorities were investigating America's self-proclaimed toughest sheriff for his part in failed public corruption cases against officials who were odds with him. Arpaio brought cases against a judge and two county officials in 2009.

Federal authorities also decided to not prosecute matters tied to alleged misuse of county credit cards by sheriff's officials, alleged misspending of jail-enhancement funds and other matters.

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