My problem is with taking draconian measures nationally, when if it's a problem, it's a global problem.
Any changes we make, and we have made significant "progress" thanks to more efficient automobiles, is offset by increases in China and India.
But, my biggest gripe is that we have much bigger concerns that are getting almost zero funding comparatively. I.e., if we get hit by a meteor or comet that throws us into an ice age, we might wish we had pumped more CO2 into the atmosphere. We could also spend more money trying to figure out when the Yellowstone volcano is going to erupt, how to predict solar storms, etc.