Trump should let Senate kill Obama's climate treaty

When is a treaty not a treaty? According to the Obama administration, whenever the president says so. This claim is especially dubious with respect to the Paris agreement on global warming, which as Marlo Lewis of the Competitive Enterprise Institute has shown, is more ambitious than predecessor agreements that were universally accepted to be treaties.

Surely if President Obama possesses an asserted authority to declare an agreement identical in form and more ambitious in substance than previous treaties to be a nontreaty then President Trump will have the authority to reach the opposite, more...