New acting U.S. Attorney for South Carolina named The U.S. Attorney’s Office says DeHeart has worked in their Charleston office since 2001. (Source: U.S. Attorney's Office) By Riley Bean | March 1, 2021 at 10:48 AM EST - Updated March 1 at 10:59 AM COLUMBIA, S.C. (WCSC) - Following the resignation of U.S. Attorney Peter McCoy, acting First Assistant to the U.S. Attorney M. Rhett DeHart has been named to office. The U.S. Attorney’s Office says this is the proper order of succession by virtue of the Vacancies Reform Act. In his roll as First Assistant, the U.S. Attorney’s office says DeHeart supervised the Criminal, Civil, Appellate and Administrative Divisions in the District’s Charleston office. They also say he served as the primary liaison between the U.S. Attorney’s Office and the Chief U.S. District Judge.