I'm assuming that homebrewing probably isn't legal in a lot of dry counties in the south, either.
And I gotta say, 7 pounds is a hell of a lot of yeast. If it's dry yeast and you go by the rule of thumb of 1 gram per gallon of wine, then 454 grams per pound times 7 pounds equals a whole buttload of hooch. Even if it's a slurry, that's probably enough for 100-200 gallons of mash on its way to shine. Not that I agree with the law per se, but that's enough yeast where you can be reasonably sure he's not just making a few batches of IPA for home consumption.