He said no to this non binding agreement because he would have to pay £300 billion per year to fund other nations green energy programs while at the same time they have no restrictions placed on them until 2030. It's a ridiculous thing to accept as POTUS. China is the worlds biggest polluter, and yet they get a free hand to build their economy by any means necessary while the U.S. gets punished, sound fair to you? Seems like nothing more than another attack on the West to me.