Green Path Forward Donald Trump tried to use tariffs to leverage trade concessions he selfishly wanted for the U.S. The tool for leveraging trade negotiations in the future is likely to be border measures related to domestic climate change measures. Both the EU and the incoming Biden Administration favor border adjustments for CO2. The question is whether other countries retaliate for the higher tariffs? The WTO rejected Trump’s national security rationale for steel tariffs but the Uruguay Round language on environmental measures has not been thoroughly litigated. While there are 159 countries that are a party to the WTO, 189 countries are signatories to the Paris Agreement. Greening measures to stop global climate change are likely...