Trump orders review of federal judges' climate guide

President Donald Trump has ordered a review of a federal judiciary reference manual's climate science guidance, which he described as politically biased and based on discredited information. The directive, issued via a Truth Social post on July 19, 2026, targets the Reference Manual on Scientific Evidence, a resource used by federal judges to evaluate complex scientific testimony.

Trump stated he was directing federal suspension and debarment officials to review the conduct related to the manual's climate content. He argued the guidance had been used to decide major climate change cases, resulting in what he called huge losses for the country. The president asserted that judges deserve facts and science, not what he termed political fraud and false science on climate, and that taxpayers should not fund such material.

This action follows a decision by the federal judiciary in February 2026 to withdraw the climate science chapter from the manual's fourth edition, which was released in December 2025. That move came after 27 Republican state attorneys general, led by West Virginia's J.B. McCuskey, complained in a January 29 letter. They argued the chapter was not impartial,...