WASHINGTON — Moving forcefully against Obama-era environmental rules, President Donald Trump is set to announce in Michigan plans to re-examine federal requirements that regulate the fuel efficiency of new cars and trucks.

Trump is expected to reveal his plans during an appearance today at the American Center for Mobility in Detroit where he'll challenge the Corporate Average Fuel Economy (CAFE) emissions targets that were a centerpiece of former President Barack Obama's strategy to combat global warming. The rollback underscores the Trump administration's rejection of mainstream climate science in an effort to boost economic growth.

The Detroit center was used to produce B-24 bombers during World War II and is now in the process of being converted into an automotive testing and product development center. While visiting there the president is expected to meet with auto executives and workers and discuss “how his plans for rolling back federal red tape will lead to more American jobs and higher wages, specifically in the automobile sector,” Press Secretary Sean Spicer told reporters.

The EPA under Obama's stewardship had promulgated a rule for cars and trucks requiring a fleetwide average of 54.5 mpg by 2025.

The president will travel later today to Nashville, Tenn., where he'll lay a wreath at President Andrew Jackson's tomb to mark what would have been Jackson's 250th birthday, before holding a campaign-style rally in the city.

But the most significant move of the day will likely be the president's announcement on the CAFE emissions targets. The move is expected to set the stage for weaker fuel efficiency standards.