As we're so often reminded, the climate accord is voluntary. The US has not committed to any funding in its nationally determined contribution, only carbon targets. The funding the US has donated to the Green Climate Fund is voluntary and is not even mentioned in our NDC. Trump has already stopped contributing to the GCF and could have done so without withdrawing from the accord.

So economically, we can do whatever we'd like as long as we meet our self-declared CO2 targets. In the country's better days, this would be seen as a grand challenge to develop an economy based around renewables, just like the challenge to reach the moon. Now all we can do is complain that it's going to cost us a few thousand coal jobs. And the problem with rallying around coal is that renewables are approaching grid parity whether you ignore them or not. The price of solar is falling exponentially; the market is growing - we can be the ones making the panels, or the ones buying them from China. Your choice.