Conditions for U.S. climate and energy policy have changed considerably after comprehensive climate and energy legislation failed in the 111th Congress. In the newly elected 112th Congress, emphasis will likely shift away from climate change to more orthodox supply side energy strategies. Writing from a European perspective, Sascha Müller-Kraenner, Managing Director of The Nature Conservancy in Europe and a regular contributor to the Advisor, explores the consequences of these U.S. changes for the European Union’s climate and energy strategy as well as for a future international climate regime.