>If we are serious about climate policy, we have to set up trade barriers proportional to greenhouse gases emissions to limit this effect.

Consumption economies can incentivize production economies to emit less.

Please remember that we are not talking about stopping climate-related policies. The point here is climate-related science. And even if you are an arch-conservative and you assume (despite all observations) that you can do fuck all about it, knowing how things are going to be is very useful if you intend to survive, never mind thrive.

You're arguing a hypothetical where the US stopped all emissions 100% and the rest of the world isn't doing anything.

The reality is that China is aggressively pushing solar and electric vehicles, and the West is complaining about it. Meanwhile the current US president's maxim is "drill baby drill".

I mean, if we don't need to stick to facts, let's discuss the hypothetical scenario where I am a powerful wizard, and when I say a magic word and I can halve the total amount of CO2 in the atmosphere?

OK, now where's my Nobel peace prize dammit??