WASHINGTON (TNND) — U.S. Attorney Ed Martin will be leaving the Trump administration and work in the private sector to fight election legal battles, according to the president.

As midterms approach, Trump has been pushing election integrity and has raised many concerns about election security in the U.S.

Martin is most well known for being the U.S. interim Attorney for Washington, D.C. and being the chairman of the Missouri Republican Party.

He also wrote a book called “The Conservative Case for Trump.”