General Motors Corp. v. United States: A Boon to Clean Air Act Enforcement
Editors' Summary: In June, the Supreme Court handed the Environmental Protection Agency's Clean Air Act enforcement program a significant victory. The Court held that EPA is not required to act on a proposed SIP revision within four months and is not barred from enforcing the existing SIP if it does not act on the proposal within a reasonable time. This Comment describes the "four-month rule" for revisions and the enforcement bar that created the split in the circuits, and it analyzes the opinion.