The law isn't going to change in the foreseeable future AND IT DOESN'T MATTER.

In much of the US, bestiality is legal. That doesn't mean you see people shagging dogs in every Walmart carpark. Law follows changes in social attitudes, it doesn't lead them. The US just needs to get in line with the rest of the world culturally and lump the gun-owning weirdos along with the puppy-fuckers: we may not want you in jail but you certainly aren't getting left alone with our kids.