China and India have ¼ and 1/11 the per-capita emissions if the USA. Thus the Chinese could triple their emissions output and still be "cleaner" than the USA. India could increase their emissions by an order of magnitude and still be "cleaner" than the USA.

As the 7th most polluting country in the world, the USA should take responsibility to show that their emissions per person should be lower.

This is how Trump carefully frames the debate: talking about increases in emissions without referring to current emissions.

Per capita is the wrong way to look at it. As someone living in India we don't want us to aspire for that kind of emissions. I belive we should start with a freeze on top ten countries. India can grow in other ways.

The USA creates far too much pollution, no doubt about it. If China and India only stop emissions increases when they reach per capita parity with the USA then we're all in a lot of trouble.

I'm sorry, what? They should take collective responsibility for not being divided into a dozen smaller states like Europe is?

Europe is sufficiently integrated to consider it as a bloc with regards to this issue. Europe's population is twice that of the USA and half that of China/India. If Europe's emissions increased to the same per capita level as the USA that would obviously be a bad thing.