If Obola vetoes a popular bill (Keystone, coal) and they are able to convince D’s to override it, that will be bigger than impeaching Obola.
Changing the rules on goal is not so simple because the rules were set by the EPA, not by Congress. I don’t how easy it would be to over rule the EPA regulations. Maybe it wouldn’t be that difficult.
This is why I fervently pray the GOP starts with such a bill, as their test of Obama's vaunted pledge to work with Congress.