If the ATF just admitted, in September, that they have no statutory authority to redefine terms under the NFA or GCA, why did they believe they had such authority back in March when various lawsuits were filed? I find it hard to believe that all those other lawsuits didn't touch on the ATF's supposed statutory authority or lack of it. I distinctly remember at least one or two lawsuits specifically claiming that only Congress had the authority to change the statutory definitions and that the ATF was overstepping its authority. Then the new kid on the block, the NCLA (founded in 2017), discovers a point of law that none of the other plaintiffs nor their attorneys knew about? What am I missing here?