theres a pilot program started by bush.
it allows you to fill out a form, take a safety test and buy for 50 bucks a license to operate a fuel alcohol still to make ethyl alcohol as a motor fuel (no drinking now...)
they get to do random surprise inspections (not good for ganja gardeners) and you have to re-up your license every year.
further, makin your own whiskey for personal consumption is not technically illegal in the federal courts. only selling it, transporting it or giving it away. wierd huh? of course the still is considered a bomb, (ha ha ha ha ) the booze is considered illegal bootleg liquor with the assumption you will sell it, even if it's personal use, and you will definately be unable to prove your still is safe and for personal use in the courts. kinda like having 1/2 oz of pot in california. if you get busted by batf, and you got even one plant, even with a state cannabis card you just won a 5 year all expense paid trip to scenic lompoc.