U.S. Sen. Bernie Sanders and others from Vermont's congressional delegation labeled the detention "immoral, inhumane, and illegal."

Mohsen Mahdawi, a 34-year-old U.S. permanent resident who was raised in a refugee camp in the West Bank, was detained during his April 14 naturalization interview in Vermont.

The legal basis for the challenge by the Trump administration to US District Court Judge Geoffrey Crawford’s decision was not immediately available Thursday morning.