UPDATE 1-U.S. EPA chief hints vehicle CO2 limits will tighten

The Trump administration’s chief environmental regulator said on Tuesday final U.S. vehicle carbon dioxide standards due out later this year could be more restrictive than current rules enacted by the Obama administration because they will eliminate certain loopholes. “In some of the out years, we’re actually more restrictive on CO2 emissions than the Obama proposal was” because the proposed Trump administration rules will eliminate “off ramps” that make it easier for automakers to comply, Environmental Protection Agency Administrator Andrew Wheeler told reporters after a speech to the Detroit Economic Club.