Overview
- Trump said at the White House that the EPA is officially voiding the 2009 Endangerment Finding, the legal linchpin for nationwide climate regulations.
- Implementation starts in the vehicle sector by rescinding federal greenhouse‑gas measurement, reporting, credit and certification requirements, while power‑plant rules remain contested but exposed.
- The White House casts the rollback as the largest deregulation in U.S. history with more than $1 trillion in projected savings, a claim challenged by critics.
- Environmental groups and Democratic‑led states including California, New York and Massachusetts plan court challenges, invoking Supreme Court precedent and the scientific consensus on climate risks.
- The reversal creates regulatory uncertainty for automakers and other multinationals facing stricter foreign standards, as the administration also moves to favor coal through Pentagon power purchases and efforts to revive plants.