Comment by ericd

Right now, there are Carbon Border Adjustment Mechanisms (CBAMs) going into place that put a price on the externality of carbon pollution in other countries with lower standards than your own. It's basically a carbon tax, the EU's just went into force. All the recordkeeping is probably not going to be cheap, but it seems like in theory, you could do something similar with other industrial emissions, and try to bring others onto the same level playing field, so that there's not that same pressure to cut corners.