President Trump is undoing another piece of Barack Obama’s legacy.

The president said Friday he would freeze fines imposed by his predecessor on automakers who produced new cars which violated stiff fuel efficiency standards, Reuters reported.

The Obama-era regulations intended to reduce harmful fuel emissions had been fiercely opposed by the auto industry, which argued the fines could add a billion dollars in additional costs to the industry.

In a statement, the Alliance of Automobile Manufacturers, an industry trade group, praised President Trump’s decision.

The Obama administration “failed to take into account the significant economic harm that would result,” an Alliance spokesperson said, adding the “significant economic harm” of the fines would have been passed on to “auto manufacturers, workers, and ultimately consumers.”

Since taking office in 2016, the Trump administration has been chipping away at Obama’s legacy, refusing to defend the Affordable Care Act in court and abandoning the Iran deal.