 Here's Grace Meng, a senior researcher at Human Rights Watch. Because it's not like a criminal justice system, in some ways it can be more traumatic. It is indefinite. There's no sentence. People have told me, if I knew when I was getting out, that would be one thing, but I don't know when I'm going to get out. For some, detention lasts a couple of weeks. For others, it's months or even years.