You clearly don't live in the land of bathtub cheese.

It's not uncommon in LA to take a few home depot buckets of raw milk, throw them in the bathtub and whip out some queso fresco or cotija. It's also not uncommon for babies to die.

Which is not to say "everyone who wants a food truck is gonna make listeria-flavored breakfast quesadillas across all 50 states." But food trucks are already a method for restauranteurs to avoid the heavy startup costs of food service and are already subject to less inspection and oversight than traditional brick'n'mortar establishments. Allowing them to slip across state lines unencumbered would be an awesome opportunity for the 0.5% of your clientele that are altruistic dreamers solely motivated by sharing grandpa's chili recipe with the world. Everyone else will hop from farmer's market to farmer's market selling costco frozen food at a steep markup.

Much of the produce available at Los Angeles farmer's markets is purchased at Ralph's or Safeway and then thrown under a pop-up. Lack of inspection equals lack of oversight equals lack of scruples.

Which is not to say I'm "anti-Little Library." It's just that without a regulation explicitly permitting a free-standing structure of 2 cubic feet or less intended and constructed exclusively for the dissemination of non-pornographic literature by private homeowners without non-profit status, you will end up with bible bunkers up and down the road. You will end up with shelters full of Amway catalogs. You will end up with outdoor billboards masquerading as Little Libraries. You will end up with people smarter and less altruistic than you figuring out a way to turn a profit in a way exactly the opposite of what you intended because that's how scumbags make money.