President Trump is bending judicial rules to help his personal lawyer keep the job she’s woefully unqualified for.

The Justice Department on Thursday cleared the way for Alina Habba to remain in her role as the top federal prosecutor in New Jersey.

The move, according to one source familiar with the strategy, will prevent Habba’s term from expiring and nullify an effort by the state’s federal judges to name her replacement, leading to a simmeri...