It is already illegal.
Well if its already illegal to bring them then it seems like a condition of those victims getting some sort of legal status, beyond the Obama one they have now, is that they identify those who brought them here illegally, if it is a crime.
And those people get prosecuted for it.
Now some may not apply if that is the condition if say its relatives.
Besides Dems absolutely wont support a immigration bill that has no citizenship, they will kill it. Their base demands it. So why join them?