Latham & Watkins made a major splash in the antitrust legal market with the arrival of Makan Delrahim, the head of the U.S. Justice Department’s antitrust division during the Trump administration.

Delrahim, who joins Latham as a partner in Washington, D.C., in the antitrust and competition practice, launched several high-profile merger challenges during his tenure as assistant attorney general. He arrives at a time when officials in the Biden administration are pushing a more aggressive antitrust stance, putting former government enforcers in high demand at major firms.