If it’s designed to place further strictures on the Liberty of American citizens, it’s “settled science”.
There is not, and never shall be, something called “settled science”.
By its very nature, science in NEVER settled. Dogma is settled, and therefore beyond any discussion, rational or otherwise. But the scientific method is structured in such a way that the inquiry into the mysteries of the Universe is always open ended, and no answer is final. A theory, a working hypothesis, may be drawn up, based on the known facts, and the observed way in which things seem to operate. But if too many facts begin popping up that seem not to be supported by the predicted behavior according to the theory or hypothesis, then the theory must be reconsidered, or even discarded.