The latest White House action to ease regulation on domestic manufacturers calls on the EPA to change the way it implements national standards for ozone and other air pollutants.

President Donald Trump April 12 signed a memo that he said will reduce “red tape” on manufacturers by making it easier to obtain permits for new and expanded factories, refineries, and other industrial facilities.

The memo directs the Environmental Protection Agency to speed up permitting decisions, an effort that is already underway.

EPA Chief Operations Officer Henry Darwin told Bloomberg Environment in March that the agency wanted to identify...