The revolving door between Big Law and government agencies has long been a target of criticism, but a new report by watchdog organization Public Citizen argues that the number of former corporate attorneys working in the Trump administration should be even more cause for concern.

Seventy-six of 127 senior Trump administration lawyers have “revolving-door concerns,” meaning they previously represented companies in the industries they’re now tasked with overseeing. Corporate lawyers are currently at the helm of nearly every major Justice...