He was accused of inadequately investigating the rape of a 15 year old girl ( her mother asked him to back off, an uncle involved?) ...as for inadequately investigating cases of paedophilia , I gather that he inadequately investigated child molestations amongst the illegal intruder community.

It may well be that he was not a good sheriff from the investigative aspect....having said that he had become a political target, becoming the most investigated Sheriff in the USA...one wonders how well other sheriffs would have turned out if they had been equally scrutinized by the media.

The USA is full of corrupt Sheriffs...Pat Kelly , Ohio; Buncich , Indiana; a string of Sheriffs corrupted by the narcos along the US/ Mexican border...Arpaio was not one of them; James Traficant, Ohio; Lee Baca , Los Angeles; Adam Sulfridge , Kentucky.

Arapaio had been railroaded by the Democrat administration for enforcing Federal immigration laws in the face of Democrat opposition...which led to his pardon.