Alex G. Tse is a U.S. Magistrate Judge for the U.S. District Court for the Northern District of California, appointed in 2019 and joining the bench on January 28, 2020, and was formerly the acting United States Attorney for the Northern District of California from 2018 to 2019. He served as acting attorney after the resignation of Brian Stretch, and he was succeeded by David L. Anderson. Prior to becoming acting US Attorney, Tse was a longtime federal prosecutor who worked in the City Attorney of San Francisco's office. He replaced the previous US Attorney, Brian Stretch, in January 2018.