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Well, the climate IS changing. And foreign supplies of energy do threaten the ability of the US to maintain a stable economy and makes it vulnerable to supply interruption, as we famously saw in the 1979 gas station lines that resulted from the energy crisis. It's important to realize what limits to consumption mean to our biosphere, and to move ahead with constructive action on it.
Using market forces is the most effective way to take this action, so public policy will have to shape them.
And as we all know, all politics is local.