() President Donald Trump is expected to hold a bill signing on Thursday at 11 a.m. EDT.

It is not immediately clear what Trump will sign, but a White House official told on Wednesday night the president would sign three measures on Thursday revoking California’s vehicle emissions standards.

The measures include blocking California’s first-in-the-nation rule banning the sale of new gas-powered cars by 2035, the official said.

Other changes outlined in the resolution is overturning state policies on tailpipe emissions and nitrogen oxide pollution in trucks, per The Associated Press.

Congress approved the resolution in May.

“Today’s historic bill signing is a major victory for American consumers, manufacturers and U.S. energy security. We thank President Trump and Congress for delivering on their promise to put an end to these extreme mandates and ensure every American can choose the vehicle that’s best for them,” American Petroleum Institute President and CEO Mike Sommers said in a statement.

In a statement, General Motors also praised the potential signing.

“We have long advocated for one national standard that will allow us to stay competitive, continue to invest in U.S. innovation, and offer customer choice across the broadest lineup of gas-powered and electric vehicles,” the auto manufacturer said.

The development comes as the Republican president is mired in a clash with California’s Democratic governor, Gavin Newsom, over Trump’s move to deploy troops to Los Angeles in response to immigration protests. It’s the latest in an ongoing battle between the Trump administration and heavily Democratic California over everything from tariffs to the rights of LGBTQ+ youth and funding for electric vehicle chargers.

“If it’s a day ending in Y, it’s another day of Trump’s war on California,” Newsom spokesperson Daniel Villaseñor said in an email. “We’re fighting back.”

The Associated Press contributed to this report.