Jeffrey Rosen, former acting U.S. attorney general under President Donald Trump, has joined Cravath, Swaine & Moore’s Washington, D.C., office as of counsel. He’s the latest high-profile lawyer to join the Wall Street firm’s new D.C. office, as it seeks to become more competitive in the region.

Rosen joins Cravath’s litigation department and will advise clients on regulatory, enforcement, investigations, and compliance and monitoring matters, according to the firm.