Without international participation, jobs and emissions will simply shift overseas to countries that require few, if any, environmental protections, harming the global environment as well as the U.S. economy.
We are in fact convinced that if we are ever to have pure knowledge of anything, we must get rid of the body and contemplate things by themselves with the soul by itself. It seems, to judge from the argument, that the wisdom which we desire and upon which we profess to have set our hearts will be attainable only when we are dead and not in our lifetime.
If you rely only on experience, you'll simply keep applying old solutions to new problems. I know a lot of people who feel they have an identity only when they're talking about their problems. That way, they exist, because their problems are linked to what they judge to be their history.