Harvard University is suing the Trump administration again after the Department of Homeland Security (DHS) moved to block its ability to enroll foreign students, the latest escalation in an ongoing fight between President Trump and the nation’s oldest school.

A federal judge on Friday blocked the Trump administration’s attempt to revoke Harvard University’s ability to host foreign students. The

"It would be devastating," a former president of Harvard — and frequent critic of the university — said of the government's attempt to prevent Harvard from enrolling foreign students.

Harvard is the first school to sue the administration after a back-and-forth between President Alan Garber and most of Trump's team.

Harvard cannot enroll foreign students for the next school year and existing foreign students will be required to transfer.

Legal experts say the smuggling charge against Kseniia Petrova is unlikely to be upheld, though it could bolster deportation efforts.

The larger legal battle between Harvard and the Trump administration could raise questions of retaliation versus executive authority.