Living overseas, I can tell you Canada is the new 'sucker-de-jour' in the minds of the global migrant community. Global migration works like a supermarket: migrants weigh up who has the best deals and the most generous welfare payments. I once had a Somali taxi driver who listed to me all the Western countries he had lived in (Sweden, Germany, Denmark etc.), who had the best welfare payments and health system, like he was a restaurant reviewer, not somebody seeking to make those countries better places. 

Canada will be flooded with illegal migrants because simply it takes about 6 months to a year for the marketplace to respond to signals (Trudeau welcoming everyone) for the smugglers, NGOs to re-direct people to the new sucker.