The problem with the existing facilities is that they are overcrowded, unsanitary, and unsafe. I don’t think “keeping” people there is going to do them any good.

You see, when there is a hurricane evacuation, the police comes to your door and asks you to leave. They cannot drag you out, though, pack into their car, and take you away. I know, I know, people who decide to stay are stupid, the government spends tons of money rescuing them when hurricane comes... but still, this is what personal liberty means: being free to make even stupid decision, as long as there is no crime committed.