I'm no philosophy wiz, but I think most knocks against Bush (or any other administration) and the environment reek of solipsism.
Threats to the environment are purely the outcome of the consumer demands, with a minor exception here and there, I guess.
I'm a vegetarian because I believe it's better for my health and personal well-being, BUT, I'm also aware that individual demands to consume animal flesh are probably the #1 threat to the Earth's environment, moreso than any gas-guzzling Hummer.
To those who wish to eat meat, all I can say is bon appe ; but if you want to eat meat AND about "the environment," then I say, STFU.