The Trump administration is barred from deporting or detaining anti-Israel activist Mahmoud Khalil, a federal judge ruled Wednesday.

Judge Michael Farbiarz, of New Jersey, issued a preliminary injunction prohibiting federal officials from booting the Columbia University graduate from the country, arguing that the admin’s reasoning that Khalil’s continued presence would pose a risk to foreign policy was not sufficient, ABC News reported.

The Department of Homeland Security has until Friday morning to appeal the decision.