In fact, there is nothing that the government can do to be prepared for illegal migrants unless and until it summons up the gumption to invoke S.33 (notwithstanding) or some form on Constitutional amendment.

The combination of the SCC decision in the Singh case and our adherence to the UN Convention of Refugees means that once an illegal sets foot on our soil, no matter how they got here, they are entitled to full blown legal process and remedies, and the entire range of social and economic services.

Since, under existing law, we can't immediately turf them if there isn't a state willing to take them, and we can't create stateless persons, the only solution I see is to intern them in secure facilities where they are provided with the basic necessities of life and not more.  That would probably require at least S.33 to obliterate the Singh decision.  It would, however, make illegal hopping into Canada less attractive.