The USA is the 2nd largest emitter of CO2, on a per-capita basis it's almost double that of China.
China is as capable as the rest of the first world to enforce higher standards if not more.
You have plenty of first world countries with a fraction of the US and Canada's per capita emissions.
You need to look within. You guys are very factually just wasteful. The US and Canada are the ones that stand out like a sore thumb among the First world countries. [0]
Only countries like Qatar and Kuwait are more wasteful than the US and Canada in CO2 per capita emissions.
[0] https://ourworldindata.org/grapher/co-emissions-per-capita?t...
Edit: added stats, it almost looks bimodal.