Jonathan Chait thinks the Paris Climate Deal will prove to be Barack Obama's greatest accomplishment. I guess that means we can count on certain people pledging to undo "every last word of it" just because it's that. I see and even talk with people who have legit, reasonable arguments against many things the Obama Administration has tried or accomplished. But I also see (and try to talk) with some who work backwards from the premise that we have to somehow undo his election, expunge every trace of his impact and maybe even rewrite the history books to say that he was never president. I can well imagine these people wanting to increase worldwide greenhouse-gas emissions just for that reason.