Think about this, folks. If you were a legislator and you outlawed (i.e., "controlled") certain substances, what would your motivation be? Take the ATF: are they looking for Joe Blow launching rockets, or are they looking for Timothy McVeigh plotting to blow up a building? Are they going after the guy who blows up a groundhog burrow in his back 40, or are they going after a guy in a militia trying to make grenade launchers?
Laws are there for a reason, and yes, you could get arrested for possession of BP without a LEUP. But to assume that the ATF has nothing better to do than go around neighborhoods looking for rocketry hobbyists is silly. It's when a rocketry hobbyist gets stupid and tries to make homemade fireworks, blows his fingers off and goes to the ER that they get involved.
Laws are there for a reason, and yes, you could get arrested for possession of BP without a LEUP. But to assume that the ATF has nothing better to do than go around neighborhoods looking for rocketry hobbyists is silly. It's when a rocketry hobbyist gets stupid and tries to make homemade fireworks, blows his fingers off and goes to the ER that they get involved.