One of the reasons we probably didn't sign on to the treaty is because anything that sounds like UN or international agreement is toxic for roughly half of our voters.

And the primary reason for that (not completely unjustly) is the feeling that no one else will do the work if we don't. Stuff like [1] and [2] make it kind of hard to argue.

[1] https://en.wikipedia.org/wiki/United_Nations#Funding

[2] http://sites.uci.edu/energyobserver/2014/03/17/comparison-of...