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Such emissions have been on the mind of President Barack Obama, who has said his administration would allow the pipeline to be built "only if this project does not significantly exacerbate the problem of carbon pollution.
Says the man who jacked up fracking, cranked up oil production in general and is looking at exploiting their own oil sands.
It's adorable the way O'Bummer tries to camouflage US protectionism by waving the environment flag.