Mainly because we are talking about NOx and other Health related emmissions that have local effects not CO2 that have global effects. Yes it sucks about the cou

Mainly because we are talking about NOx and other Health related emmissions that have local effects not CO2 that have global effects. Yes it sucks about the countries where they end up but it's the responability of the local governments to care what level is acceptable and what not. And often governments have to balance the need to stimulate local economy (by affording to buy cheaper used machines) vs the public health concerns.