Pretty much the whole world already has carbon pricing. USA is the major outlier and they have it at the sub-federal level. The level will rise over time but

Pretty much the whole world already has carbon pricing. USA is the major outlier and they have it at the sub-federal level. The level will rise over time but it's already been effective in many domains, the UK phase out of coal for example. https://carbonpricingdashboard.worldbank.org/ https://carbonpricingdashboard.worldbank.org/