Over 100 U.S. House Democrats have called on the Trump administration to make “fundamental changes” to the U.S. Mexico Canada Agreement (USMCA) to incorporate remaining in the Paris Agreement on climate change in the USMCA’s environmental chapter. If Democrats hold to that line it may prevent the passage of USMCA or cause a split party vote. Given President Trump has issued a notice to withdraw from Paris a showdown seems likely. Indeed, the administration has used the environmental chapter to promote enforcement of rules on trade in fisheries and timber rather than ...