EPA Rule Backers Preview Clash Over High Court Cases In GHG Risk Fight

Supporters of EPA’s greenhouse gas regulatory authority are disputing Trump administration claims that several Supreme Court rulings over the past 15 years justify re-examining the agency’s GHG endangerment finding that triggers a requirement to regulate such emissions, underscoring the upcoming clash over the import of those court decisions. EPA claimed in a March 12 announcement that the 2009 finding merits “fresh scrutiny” in part due to four high court rulings that were issued after the 2007 decision in Massachusetts v....