nutcases very soon who will all claim that this -obviously- does NOT mean global warming isn't happening.
Your double negatives threw me for a second there, but I think I see what's happening. You're concerned about their opponents. (I'm referring to the opponents of the nutcases who claim that this obviously does not mean that global warming isn't happening.) No doubt, you're familiar with the movement opposing those nutcases, and you with to make sure they don't get a foothold in the media, public perception, or in the legislature. There are a number of groups involved in that, and several of those are politically active. There is a bill in the legislature kowtowing to those groups, and a number of committees are organizing to keep them from making any progress. They aren't sufficiently organized at present, but with enough help they will be able to push forward enough to reach their goals. I think you'll be relieved to learn that I'm thoroughly opposed to the groups seeking to weaken the proponents of the bill making illegal the actions of committees organized to oppose the nutcases who claim that this obviously does not mean global warming isn't happening. At least...so far as it's consistent with the first Amendment.