Here's a better idea: we lock up every last one of you for the rest of your lives in our ADXes.
Twenty-three hours a day in your secure room.
All the furniture is specially designed so you can't hurt yourself except by deliberate act. Your television and radio are censored to prevent harmful opinions from reaching you. Your room is soundproofed so you don't have to listen to your neighbors.
The heavy law enforcement presence right around the corner ensures that when you need them, they'll only be seconds away. All the surveillance equipment they employ means you'll never be out of their protection, and they deliver your meals right to your door!
When you have to leave your room for your hour of fun, you will be protected by a cadre of officers as they escort you to your destination.
The structures are built like fortresses. You'll never have to worry about a home invasion.
Sure, it's not as luxurious as Halden, but you'd have to check out after 21 years there. Our ADXes are intended for indefinite stays, even if a few tenants sadly have to leave.
Best of all, since you'll be spending your whole life there, it comes at no cost to you!