You realize that the logical outcome of your argument is ludicrous, right?

You are basically arguing that if a baby gets brought into the US, then it is home free and can never be deported for being an illegal.

If that was true and that was the law, what type of behavior do you thing that that would encourage?

This whole issue shows that root cause of the issue is the initial illegal immigration, by anyone. If the government had of stopped that, then we wouldn't have to deal with all these side effects later