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The Supreme Court further held that the EPA may not regulate greenhouse gases under the Clean Air Act unless they could demonstrate that these greenhouse gases "cause, or contributeto, air pollution which may reasonably be anticipated to endanger public health or welfare."
Which it does. Someone didn't bother to read the actual ruling....
Because greenhouse gases fit well within the Act’s capacious definition of “air pollutant,” EPA has statutory authority to regulate emission of such gases from new motor vehicles. That definition—which includes “any air pollution agent … , including any physical, chemical, … substance … emitted into … the ambient air … ,” §7602(g) (emphasis added)—embraces all airborne compounds of whatever stripe. Moreover, carbon dioxide and other greenhouse gases are undoubtedly “physical [and] chemical … substance
In short, EPA has offered no reasoned explanation for its refusal to decide whether greenhouse gases cause or contribute to climate change. Its action was therefore “arbitrary, capricious, … or otherwise not in accordance with law.”
Massachusetts v. EPA :: 549 U.S. 497 (2007) :: Justia US Supreme Court Center
By the way: What you quoted there was the Clean Air Act, not the conclusion of the court. You do know that, right?
:roll:The EPA was unable to provide any evidence that greenhouse gases poses any danger to humanity, until Obama got elected President.
The SCOTUS ruling did find that GHGs not only posed a threat to specific states (like Massachusetts, thus giving those states standing), it also found that regulation of GHGs did fall under the aegis of the EPA.
There was no massive shift in conclusions about the harms of AGW that suddenly arose in 2009. In fact, by that point we'd had around 30 years of warnings from scientists that AGW was a serious issue, and the IPCC had already issued AR4 by that point.
In fact, when the challenges to the new CAFE standards made it to the SCOTUS, they refused to review the question of whether GHGs should be regulated by the EPA. E.g. in one case, they only examined whether the EPA's authority extended to small structures like malls, schools and apartment buildings.
Thanks, but no thanks, for yet more inaccurate claims. Better luck next time.