Nice post! Many great points there, especially on how rapidly the US is cleaning up its act without being involved in Kyoto.
Everyone should also remember that science and technology are advancing at a breakneck pace. What seems an insurmountable problem now may be tractable in 10 years, and trivial in 20. Spending billions or trillions of dollars on this now is not the smartest approach IMO. Especially since the actual science is far from well understood yet - what we need right now is a whole lot of data gathering and research.
Jerry Pournelle wrote many years ago that perhaps manmade "global warming" was actually saving us from an upcoming Ice Age. How ironic if that were true...
I wanted to repeat this because you have put some of my thoughts into words so well for me, thank you! I am not as sceptical of Global Warming as most here, but I do think it is silly to spend all that capital at this time on a problem we really aren't sure about. When and if the time comes, I believe we'll have the technology to "fix" the problem. Be it solar reflectors in orbit, or seeding the skys to increase reflective cloud cover. Not just that, but the US would be at the forefront of those efforts.