At London Climate Action Week, Climate Mayors share data showing that Climate Mayors members accounted for nearly half (48.6%) of all U.S. climate policy events during the first Trump administration, even though our members only make up 20% of cities, according to research by Thomas Consulting Group.

Under every presidential administration over the last decade, climate momentum has sped up—the number of city climate and clean energy policy adoption has increased under every administration. Cities are among the most effective and consistent climate actors we have, turning commitments into implementation on the ground, where people live, and serving as the backstop when Washington retreats.