WASHINGTON - President Donald Trump will travel to Michigan Wednesday, where he is expected to roll back federal fuel-economy requirements that would have forced automakers to significantly increase the efficiency of cars and trucks built in the next decade.

The fuel-economy standards were a key part of former President Barack Obama's strategy to combat global warming.

Transportation Secretary Elaine Chao and Environmental Protection Agency chief Scott Pruitt are expected to join Trump on the visit to Ypsilanti, Michigan, a Detroit suburb.

Automakers asked Pruitt to discard a decision by the Obama administration requiring cars to average a real-world figure of 36 miles per gallon in model years 2022 to 2025. The automakers said the rule could add thousands of dollars to the price of new cars and cost thousands of jobs.