'We feel stabbed in the back. This was really a dastardly move by an administration that said it was a friend of the environment. With friends like this, who needs enemies?'

Obama-EPA Puts Off Job-killing Regulation Announcement Until After Election

'That could be unwieldy, expensive and unpopular -- even Pres. Obama has said it's not his preferred solution. But for now, it's his only option'

'These petitions — based as they are on selectively edited, out-of-context data and a manufactured controversy — provide no evidence to undermine our determination'