Story perspectives

Trump Administration Fights California's Truck Emissions Regulations

1/28/2026

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Summary

Story summary

The U.S. President Donald Trump’s administration opposes California's trucking emissions standards, arguing they would raise costs and harm interstate commerce.
The Environmental Protection Agency disapproved California's Heavy-Duty Inspection and Maintenance Regulation, targeting over 50,000 trucks.
EPA Administrator Lee Zeldin said the California rules violate the Commerce Clause.
California officials will continue enforcing emissions rules for trucks registered in the state.
The total cost of California's trucking regulations remains unclear.

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Story summary

The U.S. President Donald Trump’s administration opposes California's trucking emissions standards, arguing they would raise costs and harm interstate commerce.
The Environmental Protection Agency disapproved California's Heavy-Duty Inspection and Maintenance Regulation, targeting over 50,000 trucks.
EPA Administrator Lee Zeldin said the California rules violate the Commerce Clause.
California officials will continue enforcing emissions rules for trucks registered in the state.
The total cost of California's trucking regulations remains unclear.