(TIME) — Europe may use President Trump's favorite economic weapon to punish his inaction on climate change.
French President Emmanuel Macron has outlined a proposal for the European Union to use tariffs to fight climate change
The prospect of a European border carbon tax is an ironic development. Trump and many Republicans in Washington argue that measures like the Paris Agreement are too costly and leave the U.S. at a competitive disadvantage. On Thursday, Senate Majority Leader Mitch McConnell explained his decision to keep the Senate from voting on a measure to keep the U.S. in the Paris Agreement in exactly those terms.
Macron did not get into specifics, but such a measure would likely mean a carbon tax in E.U. member countries coupled with a fee on imports from non-E.U. countries that don’t have their own carbon tax or another form of carbon pricing.