It's not an "initial, mandatory stint" of 3 years. Most Supermax prisoners are housed for less than 3 years (in the Supermax facility), and in order to be subje

It's not an "initial, mandatory stint" of 3 years. Most Supermax prisoners are housed for less than 3 years (in the Supermax facility), and in order to be subject to solitary on arrival you must be a high-risk prisoner (cartel or history of violence while incarcerated). It is the exceptional case that a prisoner remains in Supermax, much less Supermax solitary, for more than a year. And quite honestly, all of those exceptional cases are there for a reason and have earned the punishment.