And yes. I'm well aware of how far off from reality this view is. It does not make it the wrong viewpoint. The FedGov has LIMITED powers and duties. Anything not listed is verbotten to them.
This is such an instance.
Well, what does that leave them to do? If all this should be handled by local LE, we need to cut their budget.
This is a public health issue. Urinating on other people is against the law. Anal sex with multiple partners lead to AIDS. If the feds don't get Max Hardcore first, then communicable diseases surely will. I'm hoping on the latter.