March 29, 2017 0317 GMT
In a move widely seen as a preamble to loosening fuel standards, Trump told an audience of cheering union workers, he would "ensure that any regulations we have protect and defend your jobs, your factories," and promised he would encourage growth in the U.S. auto sector, reuters.com reprted.
"The assault on the American auto industry is over," Trump said, standing in front of a banner that read "Buy American-Hire American."
Trump added that the White House is "setting up a task force in every federal agency to identify and remove any regulation that undermines American auto production."
The backdrop and message underscored Trump's efforts to lock down support in industrial states such as Michigan that put him in the White House. Trump spoke at the site of the former Willow Run bomber factory in Ypsilanti, Michigan, which won fame for building an operational B-24 heavy bomber every 59 minutes during World War Two. Now, the site is being redeveloped as a testing ground for autonomous vehicles.
At a roundtable with industry leaders Trump made clear he expected automakers to hire more Americans in return, a theme that dominated his election campaign.
"We're going to do some wonderful work with you, but you're going to have to help us with jobs," he said.
Auto industry executives have said they are hopeful the Trump administration will pursue tax and regulatory policies that would benefit U.S. manufacturers.
Reopening the fuel efficiency rules put in place by Democratic President Barack Obama days before he left office is one of the top items on the industry's agenda. Automakers, through their lobbying groups, have said the Obama rules were too expensive and could cost American jobs.
"These standards are costly for automakers and the American people," said Environmental Protection Agency Administrator Scott Pruitt.
Automakers are wary of being seen as out of touch with environmental concerns, or unwilling to invest in new technology. Ford, for example, used its Twitter account on Wednesday to highlight previously announced commitments to develop electric vehicles.
It could take a year for the review process to play out, and Wednesday's event was effectively a starting gun for intense lobbying efforts over how government policy will drive technology investment decisions in the auto sector.
Critics like Democratic U.S. Senator Edward Markey of Massachusetts said Trump's move could hurt consumers.
The president is not seeking to revoke California's authority to set vehicle efficiency rules even stricter than federal rules, including mandated sales of electric vehicles, as part of this move, a White House official said. The official did not rule out seeking to withdraw California's authority in the future. Pruitt, an ally of the fossil fuel industry, would not commit during his Senate confirmation hearing to allowing California to continue its own clean vehicle rules.
A group of 10 state attorneys general led by California and New York said on Wednesday they would fight attempts to weaken the rules.
Automakers have signaled they want the government to give manufacturers more credit toward achieving fuel efficiency targets for technologies such as "stop-start" systems that shut down a car’s engine at a traffic light.
Regulators should also look at whether ride hailing and vehicle-to-vehicle communications systems designed to prevent accidents and alleviate road congestion could be counted toward the industry’s greenhouse gas emissions goals, the automaker group proposed in comments to the EPA last year. The group represents a dozen automakers, including GM, Ford and FCA.