SB 990, the Freedom to Haul Act of 2025, would block the Environmental Protection Agency from implementing or enforcing its final “Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles—Phase 3” rule. The bill is aimed at EPA emissions regulation for heavy-duty vehicles and is framed as a restriction on federal greenhouse gas standards affecting trucks and other commercial vehicles.
The bill also amends the Clean Air Act to limit how future tailpipe regulations can be written. It would require that such regulations not mandate any specific technology and not result in limited availability of new motor vehicles based on engine type. The EPA would be directed to revise its regulations within two years to conform to these new limits, which would affect future federal vehicle-emissions rulemaking and the agency’s regulatory authority under Section 202(a)(2) of the Clean Air Act.
Impact
If enacted, SB 990 would immediately bar enforcement of the EPA’s Phase 3 heavy-duty vehicle greenhouse gas rule and would narrow the EPA’s ability to use tailpipe standards in ways that could influence vehicle technology choices or vehicle availability. It would amend the Clean Air Act, specifically 42 U.S.C. 7521(a)(2), to constrain future emissions regulations and require conforming regulatory revisions, potentially affecting automakers, engine manufacturers, trucking companies, and environmental regulators.
Sentiment
The bill’s introduction by a large group of Republican senators suggests strong support among lawmakers concerned about federal emissions mandates and their effects on vehicle supply, technology choice, and the trucking industry. The bill title and text reflect a deregulatory, pro-industry approach, and there is no recorded committee debate or vote history in the provided material to indicate bipartisan support or opposition. Overall, the available context points to a favorable reception among sponsors and likely skepticism from environmental advocates.
Contention
The main point of contention is whether EPA emissions standards should be allowed to drive technology adoption and reduce greenhouse gases, or whether they improperly force specific technologies and constrain the availability of new vehicles. Supporters are likely to argue the rule burdens manufacturers and consumers and limits engine choice, while opponents would likely contend that the EPA needs broad authority to regulate emissions and advance climate and air-quality goals. The bill directly targets the Phase 3 heavy-duty vehicle rule, making that rule and the scope of EPA authority the central dispute.