UPDATE 1-Trump administration mulls stiffer rules for auto imports -WSJ

(Adds details in paragraph 3)

WASHINGTON, April 6 (Reuters) - The Trump administration is considering ways to require imported automobiles to meet stricter environmental standards in order to protect U.S. carmakers, the Wall Street Journal reported on Friday.

Citing unnamed senior administration and industry officials, the Journal said President Donald Trump had asked several agencies to pursue plans to use existing laws to subject foreign-made cars to stiff emission standards.

The initiative was still in the planning stage, with officials at the U.S. Environmental Protection Agency working to craft a legal justification for the policy, the paper said. It said there were hurdles to its implementation, including opposition from some in the administration.

The Journal said the White House did not respond to a request for comment, and Reuters was not able to immediately verify the report.

The EPA and the Commerce Department, which the newspaper said was also involved in the effort, did not immediately respond to requests for comment from Reuters. Neither did representatives for Ford Motor Co, General Motors or Fiat Chrysler.

(Reporting by Tim Ahmann; Additional reporting by Paul Lienert in Detroit Editing by Frances Kerry)