UpdatedWed, Feb 10, 2021 at 1:08 pm ET Replies(2) U.S. Attorney Andrew Lelling was appointed by President Trump in 2017. (AP Photo/Steven Senne) BOSTON — U.S. Attorney for Massachusetts Andrew Lelling will resign at the end of February, his office announced Wednesday. Lelling, who was appointed by former President Trump in 2017, gave his resignation to President Biden earlier this week. It is common for federal prosecutors to step down when a new party takes control of the White House. First Assistant U.S. Attorney Nathaniel R. Mendell will be acting U.S. attorney until a replacement is chosen. Subscribe "It has been an honor to lead this office," Lelling said in a statement. "Over the last 15 years, I have had the privilege of working not only with the best federal prosecutors in the country, but with the federal, state and local law enforcement officers who put themselves at risk to keep Massachusetts safe."