Trump got it right.The Paris Accord would cost trillions of dollars and reduce the temperature at best tenths of a degree as calculated by the UN and EPA approved computer program. China and India are allowed to increase their emissions until 2030 with no restrictions thus canceling out the US reduction of carbon dioxide. The truth is that carbon dioxide does not effect temperature in any measurable way. It is slightly cooler than the long term average. Is it possible to believe in catastrophic human caused global warming when the Reports by the US Dept of Energy (DOE) indicate that 97% of the annual carbon dioxide emissions come from Nature itself. We have had 40 years of global warming and the temperature has remained flat. In fact the Atmosphere has cooled.The temperature record published by the NOAA, and NASA has been adjusted to match the rise of carbon dioxide. The truth is hard to deal with because few people can follow the technical argument and the scientists on the dole lie to them. Of course it doesn't help that the media only prints the propaganda. The media says that the US has given up its leadership. Actually Trump is leading by not participating in this inane scheme to destroy capitalism and redistribute the wealth. Several high ranking UN climate change officials have been quoted admitting this purpose. The part of Trump's speech that I disagree with is the promise to renegotiate a better deal. Carbon dioxide is a good thing, necessary for life. Catastrophic human caused climate change is a grotesque hoax.