A lawsuit Wednesday accused the Trump administration of preventing Americans from bringing their foreign spouses and parents to live with them in the United States by requiring those immigrants to prove they can afford health care before they get visas.

Seven U.S. citizens and a nonprofit organization filed the federal lawsuit in Portland, Oregon, over the rule that’s set to take effect Sunday. It applies to people seeking immigrant visas from abroad, not those already in the country, and doesn’t affect asylum seekers, refugees or children.

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