Dec. 9, 2019—U.S. President Donald Trump said on Friday that his administration will finalize its rollback of Obama-era vehicle emissions standards next year, according to Reuters.

The administration has argued that the rollbacks are necessary for economic and safety reasons but California and environmentalists reject that analysis, saying consumers would spend hundreds of billions more in fuel costs.

The administration has said the rules would reduce traffic deaths because it would cut future vehicle price hikes and prod speedier purchases of safer vehicles. But some EPA staff disputed that contention, according to documents released last year, arguing it would actually lead to more traffic deaths in some years because of an increase in vehicle travel.

In August 2018, the administration proposed freezing vehicle efficiency requirements at 2020 levels through 2026, which would result in average fuel efficiency of 37 miles per gallon (mpg) by 2026, compared with 46.7 mpg under rules adopted in 2012.