President [[George W Bush]] appointed Whitaker US Attorney for the Southern District of Iowa, where he prosecuted white collar and drug trafficking crimes. He held that office from 2004 until 2009.
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President [[George W Bush]] appointed Whitaker US Attorney for the Southern District of Iowa, where he prosecuted white collar and drug trafficking crimes. He held that office from 2004 until 2009. He ran for United States Senate in 2014, losing the party's nomination to Republican Senator [[Joni Ernst]].