A United Nations report published Wednesday highlights the legal risks that opponents say President Donald Trump faces if he does not withdraw from Paris climate agreement. The Paris Agreement could be used to force governments, including the Trump administration, “that have adopted climate-oriented laws to implement them,” reads the UN Environmental Program report on global warming litigation. The report claims that litigation “has arguably never been a more important tool to push policymakers and market participants” to fight global warming. President Donald Trump promised to “cancel” the Paris Agreement on the campaign trail, but his White House is split on...