The memo specifically targets emissions components that are strictly regulated by the Environmental Protection Agency (EPA) under the federal Clean Air Act. The Clean Air Act prohibits drivers from tampering with emissions systems, including intentionally removing or bypassing a catalytic converter on a vehicle that was originally equipped with one. The California board is currently the only organization allowed to certify aftermarket parts under the Clean Air Act's guidelines. Existing 'Right To Repair' LawsSome states have existing laws that provide drivers with broader right-to-repair access. Potential Unintended ConsequencesWhat types of repairs the EPA will eventually allow following the 30-day guidance period is unclear, especially since any policy changes must still adhere to the Clean Air Act.