The Supreme Court on Wednesday lifted a district court's block on a Trump administration rule that would prevent almost all Central American migrants from applying for asylum in the U.S.

Background: The Trump rule, first introduced in July, forces migrants fleeing their home countries to apply for asylum in one of the first countries they pass through, or face ineligibility for asylum once they reach the southern border of the U.S. It has faced numerous legal challenges and was twice temporarily blocked by a California judge.

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