How Trump Is Scrapping the Legal Bedrock of Climate Rules

In 2009, the Environmental Protection Agency formally concluded that greenhouse gases jeopardize public health and welfare. This so-called endangerment finding became the legal foundation for a host of rules combating planet-warming pollution — and a perennial target of conservative efforts to reverse them.

US President Donald Trump rescinded it on Feb. 12 along with greenhouse gas restrictions on automobiles that were predicated on its authority.