Let the WTO Referee Carbon Border Taxes
Efforts to reduce global greenhouse-gas emissions must overcome the free-rider problem, and carbon border adjustment measures are the most effective way to level the playing field. But only a revived World Trade Organization could ensure that such a mechanism is applied fairly.
CAMBRIDGE – Perhaps the most important task confronting the international order is enforcement of national limits on greenhouse-gas emissions, such as those that were negotiated in the 2015 Paris agreement. Carbon border adjustments could give these limits teeth, but fair application requires a revived World Trade Organization.