So I went to look at the EPA's global greenhouse emissions data. I couldn't readily determine when the passage of any major environmental regulation occurred just by looking at the chart. https://www.epa.gov/ghgemissions/global-greenhouse-gas-emiss...

It turns out the Clean Air Act was passed in 1955. Not even a blip on the radar. Then in the 60s they amended it significantly to apply to motor vehicles. Not even a blip on the radar.

Basically, the Clean Air Act doesn't seem to have done one iota of good with regards to total global greenhouse gas emissions, and therefore nothing for Global Warming. Mostly it has helped move dirty jobs overseas.

With all the current attempted and actual dismantling of the factors you mention, perhaps his predictions just need to be time shifted a few decades. Obviously, I hope not.