So, signing of treaties isn't about setting an example it's about living up to your end
I agree. But then, what do you do when many of the countries you compete against economically isn't living up to their part of the bargain? Then we're just chumps.
The sad thing is that the USA needs to be leader in this, and set examples. Not holding my breathe on this.
I fully support green measures even when it harms our economy, as long as most of the big guys and our main economic competitors are doing it too for the most part.