Michigan must now prove it can enforce clean air rules for ozone pollution

The US environmental regulators approved Michigan's plan to meet federal clean air standards for ozone. This means Michigan must show it has the legal authority and resources to control ozone pollution.

Every state must have a plan to meet federal clean air standards. This document confirms Michigan's plan is acceptable for ozone. It means the state has to demonstrate it can actually enforce its own rules, not just have them on paper.