A federal judge on Monday blocked the Trump administration from removing nondiscrimination protections for transgender people in health care, issuing a temporary setback to a major policy priority for social conservatives. The new rules, which were set to take effect on Tuesday, would have reversed Obama-era Affordable Care Act regulations that said discrimination protections “on the basis of sex” should apply to transgender people. Civil rights advocates had decried the new interpretation, saying it could be used to deny care to transgender patients. The Department of Health and Human Services finalized the regulations in June, three days before the Supreme...