Ho K. Nieh is sworn in as a U.S. Nuclear Regulatory Commission member by former Commissioner William Ostendorff as his wife, Kerry, observes in Washington on Dec. 16, 2025. U.S. Nuclear Regulatory CommissionPresident Donald Trump has tapped Ho K. Nieh to chair the five-member Nuclear Regulatory Commission (NRC), marking the third leadership change in less than a year at the nation’s nuclear safety agency.Nieh was among two commissioners appointed in December to fill seats vacated by Christopher Hanson, fired in June after being removed as chair on the president’s first day in office, and Annie Caputo, who resigned in July.
Trump Appoints New US Nuclear Regulatory Chief
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