@revelette1,
I asked you a few pages back about your opinion of Canadian laws and procedures that also require the separation of parents incarcerated for crimes and their children - an exactly comparable situation. You haven't yet replied.
The alternative to the current enforcement of the law is non enforcement, and the cascading loss of control of our borders, and all that implies. Another way to avoid this dilemma would be the construction of an effective physical barrier at our southern border. Oddly those who are most vocal about enforcement also oppose the wall.
The willful and continued failure to enforce some laws threatens all the law. That can have very bad consequences.
From what I have read recently Canadian border enforcement is quite rigorous. What is Canada's policy for the treatment of known illegal immigrants?