This time around, the California Authority is setting its own emissions standards, which are stricter than the Trump government's proposal. The Trump administration is expected to slow or freeze the annual growth of the Obama administration, which is scheduled for 2025 each year.
Automakers are dreading the concept of two different US car markets based on two different standards: one that was also set by California is true for 13 other states following that example, and the federal standard elsewhere applies.
California and the 13 following states account for 40% of the US auto market, according to Dan Becker, whose Safe Climate Campaign supports California's position.
Californian regulators seek to maintain their decades-long power to stop pollution standards based on the Clean Air Act of 1
In a statement, the White House said: "Despite the best efforts of the administration to find a reasonable solution, it is time to acknowledge that CARB has not offered a productive alternative since the SAFE vehicle rule was proposed Administration plans to finalize a rule throughout the year to promote safer, cleaner and more affordable vehicles. "
California Air Resources Board spokesman Stanley Young said the two sides had not met since December 19 and the meetings had been "wholly substantive" and the discussions had never reached the level that could be called "negotiations".
"The administration broke off communication before Christmas and never responded to our proposed trade-offs – or even made a compromise proposal," said Young in a statement. "At that point, we came to the conclusion that the negotiations were never taken seriously, and their public comments on California seem to underline this point."
The Environmental Protection Agency did not respond to a request for comment, and the Department of Transportation, which also plays a role in the norms, sent questions to the White House.
Last May, California sued the Trump administration, claiming that it had wrongly decided to review emissions standards.
Experts watching the process expect the state will eventually face a second challenge when the final rules are released.
They expect the Trump administration to finalize a new auto emission plan this spring that would apply to model years 2022 to 2025.
The Obama administration's 2012 plan for the 2017 to 2025 model calls for standards to automatically increase all year. It also required a mid-term review, which completed the administration before the 2016 elections. It was decided not to change the plan.
Becker expects the document to formally repeal California's authority.
"The government seems inclined to divert these emissions regulations from the cliff," he said of the standards of the Obama era.
Sen. Tom Carper, the high-ranking environmentalist Democrats, called on the EPA to negotiate in good faith, as "litigation is not the best option here."
"It wastes time and money, creates uncertainty for American automakers and harms the environment," he said in a statement. "I encourage carmakers to speak out quickly, loudly and clearly against this decision, as every automaker has previously urged the government to stop following this misguided, legally questionable and irresponsible path."