(CNN) A judge in Oregon granted a temporary restraining order Saturday against a policy that would have denied immigrants a visa unless they can prove they will have health insurance.

This order comes after a group of US citizens sued the Trump administration, arguing that this is a new form of "family separation."

The lawsuit, filed in US District Court in Portland, Oregon, claims that the proclamation will bar hundreds of thousands of immigrants from coming to the United States, and as a result, could separate families who are immigrating via family-sponsored visas.

Justice Action Center spokesperson Esther Sung said she was encouraged by the court's decision in a statement. "The ban would separate families and cut two-thirds of green-card-based immigration starting tonight, were the ban not stopped. It's egregious that President Trump is attempting to flout the will of Congress and squeeze through a complete overhaul of the nation's immigration laws without anyone noticing."

"Today's decision highlights the urgency of blocking this health care ban before it causes irreparable damage to our community and those we serve," Carmen Rubio, the executive director of Latino Network, said in a statement.

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