A New York Times story describes President Obama's efforts to make meaningful international progress on climate change despite a contrarian Congress. The article explains how Obama's climate negotiators are trying to build off the 1992 UNFCCC to craft a hybrid agreement that is "politically" rather than "legally binding" so as to avoid the requirement that a legally binding treaty be ratified by Congress.
Deniers, predictably, are upset about this. Breitbart has a piece calling Obama the "Al Capone of climate change" who is launching an "assault on democracy, the Constitution and the US Economy," meanwhile others are trotting out the usual myths saying climate change is a job killing communist hoax. Again, this is in reference to a potential agreement where the primary enforcement method would be embarrassment; hardly mutually assured destruction. The administration has also clarified that it's premature to speculate on what type of agreement might arise, and that it would consult with Congress regardless of the outcome.