Smog Check

When federal and state governments battle over environmental regulations, whose approach should prevail? Shortly after passage of the 1990 Clean Air Act Amendments, a controversial U.S. EPA mandate led to an intense conflict between federal regulators and California politicians. The disagreement pitted EPA's required overhaul of auto inspections against California's desire to self-govern its test program - popularly called 'Smog Check.' The conflict nearly upended the Clean Air Act, and triggere