Since the US only accounts for about 15% of global CO2 emission, even if through some political miracle all of this plan came to pass, it wouldn't slow down global warming very much.

We need solutions that will actually scale to be adopted by the whole planet. That means we need to make wind and solar cheaper, or possibly figure out how to remove CO2 from the atmosphere. Any solution that costs a whole lot of money and involves no technological innovation isn't going to work.