Supreme Court Blocks Biden Plan on Air Pollution

The Supreme Court temporarily put on hold on Thursday an Environmental Protection Agency plan to curtail air pollution that drifts across state lines, dealing another blow to the Biden administration’s efforts to protect the environment.

The ruling followed recent decisions chipping away at the agency’s authority to address climate change and water pollution.

The ruling was provisional, and challenges to the plan will continue to be litigated in an appeals court and could then return to the Supreme Court. But even the temporary loss for the administration will suspend the plan for many months and...