Back when I was into hobby rocketry a lot of the guys needed BATF “Low explosive user permit”s to store rocket motors over a certain size.
They had to agree to give up their rights in order to get said permit...BATF could search their homes and/or storage magazines at will.
I simply never went that big and that was one of the reasons.
(As an aside, Sen. Enzi of Wyoming nearly got a bill passed to get the BATF off the hobby rocketeers asses but our pal Chuckie Schumer went on the Senate floor waving around a big cardboard rocket and proceeded to rail about how we had no business doing such things, that prick bastard)
Funny how those bastards think they know what everybody else needs.