One of the most powerful moment for me is in the last episode, when an ICE said:
"I can't tell you how exhausting it is day in and day out, to be putting cuffs on people that you honestly can't blame one iota for what they did. They didn't kill their wife. They didn't set off bomb somewhere. They didn't rob a bomb. Doing exactly what I would do in their situation, which is to try to come here. I don't like that about my career, but I still think it's important to do it, and I put my personal feelings aside, which, yeah, maybe that's what every Nazi said, right."
He is fully aware that what he does for living is despicable, and still does it. Why? How much are they paying him to sell his soul!