While the administration supports freezing the mileage standards after 2020, it will seek public comment now on that proposal and a range of others, including leaving the tighter, Obama administration fuel standards in place.
The EPA and NHTSA are giving the public 60 days to provide feedback to the new proposal. Markey told reporters on a phone conference in response to the administration's proposal Thursday. "The Trump administration has chose to force America's drivers to spend more at the gas pump, burn millions more barrels of oil, and put us on a path to greater harm from climate change".
Under this GOP-controlled Congress, that gambit is unlikely to advance.
President Donald Trump listens as Rep. Marsha Blackburn, R-Tenn., speaks at a rally in Nashville, Tenn. on May 29, 2018. It could also become a polarizing issue in elections in November. They said the average cost of a new automobile is $35,000 and attributed part of that to increasing fuel standards.
The Trump administration has served notice that it plans to roll back tough gas mileage standards scheduled for 2021 by the Obama administration. The resolution enables Congress to essentially void an executive branch regulation it deems misguided or unnecessary.
The Trump proposal estimated that under Obama-era requirements, about 70 percent of light trucks would be required to have some form of electrification by 2026 - a level it described as unrealistic - versus just 1 percent under the Trump proposal.
Markey noted that Democrats, along with Republicans Sen.
Thursday's proposal would freeze an effort by the Obama administration meant to promote auto fuel efficiency and curb tailpipe emissions of climate-changing pollutants.
The Trump administration argues the new standards strike a regulatory balance between costs, road safety, fuel consumption, pollution and other regulatory factors. The administration said the proposed plan will prevent thousands of on-road fatalities and injuries.
In 2012, former President Barack Obama announced that the Department of Transportation and the Environmental Protection Agency had released guidelines that would work to "cut greenhouse gas emissions from cars and light trucks in half by 2025, reducing emissions by 6 billion metric tons over the life of the program".
Environmental groups are already expressing their outrage over the plan. The state, and others that have adopted the standard, have vowed to fight in court.
Sen. Dianne Feinstein said in a statement Thursday that there is no need to change the standards, and that the state is "not going to let him" change its emissions standards. "California will fight this stupidity in every conceivable way possible".
"The earth is not flat, and climate change is real", California Attorney General Xavier Becerra said, as he connected global warming to the deadly wildfires burning out of control throughout the state.
Gina McCarthy, thes EPA administrator under Obama, said the reversal of these standards "run contrary to sound science and the law".
The Trump administration has moved to weaken USA vehicle emissions standards and has set up a major confrontation with California by scrapping its ability to enact stricter pollution standards and mandate the sale of electric cars. Acting EPA chief Andrew Wheeler said on Wednesday he would welcome a deal between the industry and states.