I'm pretty sure climate change is bull**** anyway, but to be frank the parties that cause most of the pollution weren't even involved in the accord. So, it's just a bunch of nations who barely contribute to the total problem standing around and giving each other handies. Mind you, not that I necessarily fault the countries that are doing it greatly -- except for China (which certainly has access to modern technology/solutions), as most of them are developing nations.
The other thing worth noting is pollution is decreasing rapidly and at a 50 year low, and we've seemed to be getting colder than warmer. But, evidence doesn't matter.