SUPREME COURT Trump's move to weaken car rules could reopen climate case

The Trump administration’s plan to weaken federal rules on vehicle emissions could lead to the Supreme Court re-examining a major climate case that defined carbon dioxide as an air pollutant.

EPA and the National Highway Traffic Safety Administration are expected to launch a rewrite of the tailpipe rules as soon as this week. It’s expected to freeze fuel economy targets at 2020 levels through 2026, allowing automakers to build cars that travel about 30 miles per gallon of gas rather than 36 miles.