Obama-era methane rules rolled back (2016-2017)
The EPA finalized its first federal methane rules for new oil and gas sources in June 2016. Trump's first term suspended enforcement months later, and the D.C. Circuit rejected that suspension in a July 2017 ruling.
The suspension was blocked in court, but the agency eventually rewrote parts of the rule.
The episode showed methane rules oscillate with presidential administrations, and that courts check the most aggressive rollbacks.
Today's rollback covers a broader rule that also applies to existing wells, and the EPA is proposing a formal rescission rather than a suspension.
