Why the ratification of the Paris Climate Agreement is bad news for Donald Trump

Late last week, the US and China announced that they had ratified the 2015 Paris Agreement on climate change, an accord which Donald Trump has vowed to renegotiate if he wins the White House this fall. Bob Ward writes that if the Agreement comes into force – which will be very likely if it is ratified by the EU’s Member States – Trump will likely be unable to withdraw the US from it over the course of a single presidential term.