The Supreme Court on Wednesday refused to allow Florida officials to enforce a state law that imposes harsh criminal penalties on undocumented migrants for entering the state.

The U.S. Supreme Court on Wednesday blocked Florida’s enforcement of a new state immigration law that allowed authorities to arrest undocumented migrants who enter the state, upholding an injunction ...

Immigrants rights groups filed lawsuits on behalf of two unnamed, Florida-based immigrants living in the U.S. illegally, arguing that immigration is a federal issue beyond the power of the states.