Supreme Court rules against permanent residency for some immigrants

The Supreme Court on Monday ruled that immigrants who entered the U.S. illegally and were later allowed to remain in the country for humanitarian reasons are not eligible to become permanent residents.

The court’s unanimous decision could affect thousands of people, including many who have lived in the U.S. for years and hoped to obtain lawful permanent resident status, or a green card.

Justice Elena Kagan, writing for the court, said the decision was “a straightforward application” of U.S. law, which generally requires an immigrant to have been lawfully admitted to...