Right, I agree that's probably how it's meant, but that's not accurately described by the phrase "making it illegal". If I make houses without a sewer line ill

Right, I agree that's probably how it's meant, but that's not accurately described by the phrase "making it illegal". If I make houses without a sewer line illegal, that doesn't mean the state has to lay a sewer line, it means you the owner have to take care that you get a sewer line or you open yourself up to liability.