In a sweeping ruling, the Supreme Court limited the ability of federal judges to block executive actions throughout the country through nationwide injunctions, greatly affecting how parties seek judicial relief going forward. The court’s 6-3 ruling Friday, with all six GOP-appointed justices in the majority, deals a significant blow to legal challenges against President Donald Trump’s extreme executive orders and other actions, many of which have been blocked or temporarily put on hold through nationwide injunctions. Nationwide, or universal, injunctions prevent the government from enforcing a law, regulation, or policy across the entire U.S. — not just against the specific...