No, Wisconsin literally can not do this, it’s not physically or legally possible. It’s a funny idea though.
They could try to ban every website which would require ISP’s to block the websites on the list… but again, all you would need is a VPN… and if they outlaw VPN, another user posted the solution.
Unless they create a Wisconsin firewall there is literally nothing they can do to pass the rules they are talking about here. All a user would have to do is maybe click three extra buttons to just ignore this law and remain untraceable for the most part