You skipped over my argument, that nobody would need to deport them, if they had never been imported.
They did this in Germany, too. Insisted we let everyone in, and they would sort through them and then deport — pinky-swear. Then it came time to deport and they were like, Oh, it would be too mean to deport!
Turns out that it is much harder to deport 1 person than import 100k persons. And they knew that, from the beginning.