In its first 24 hours, the new Trump administration has reached into critical U.S. attorney’s offices to quickly appoint new interim leaders, signaling a break from past practice that reflects the importance of frontline prosecutors to the administration’s plans.In three of the most important federal prosecutors’ offices — two in New York City and one in Washington — new acting leaders have been announced. Two of the picks are respected longtime prosecutors; the third is a Trump loyalist who had pushed for the release of Jan. 6 defendants.The new acting head of the U.S. attorney’s office in Manhattan is Danielle...