I do think that if the US were to grab someone, and they are innocent, and it caused financial hardship on them, they should be given a fair amount of money for the inconvience.
I do find it hard to believe that these people are picked at random. There must have been some sort of reason for them being brought in. Perhaps they had friends that were involved in something they shouldn't be. Perhaps they visited a building that suspicious behavior was taking place. Many times they are here illegally.
If I were hanging around some shady people, I could expect that at some time I would be questioned about it. That is just common sense. If I hung around a drug house, I could expect to be questioned. If I hung around a religious place that tought violence, I could expect to be questioned. If I hung around the mafia, I could expect to be questioned.
The key is to not surround yourself around edgy situations.
I would prefer the US be a little over cautious for everyones benefit, but if they truly are innocent, then some sort of fair compensation. That is fair, I have no problem with that.
We can just wait til they blow something up.