U.S. Attorney Justin Herdman submits resignation to President Trump, AG Barr Herdman became U.S. Attorney for Northern District of Ohio in 2017. He was tapped to become U.S. Attorney for the District of Columbia but returns to private life. Author: WTOL Newsroom Updated: 2:59 PM EST December 16, 2020 CLEVELAND — (The video above is from June 2020.) Justin E. Herdman, United States Attorney for the Northern District of Ohio, announced today that he has submitted his resignation to President Donald J. Trump and Attorney General William P. Barr. Herdman was sworn in as United States Attorney on Aug. 21, 2017, and will step down on Jan. 8. By operation of federal law, First Assistant U.S. Attorney Bridget Brennan will be sworn in as acting U.S. Attorney upon the effective date of Herdman’s resignation.