A serious immigration debate needs to acknowledge these alarming realities. This time really is different. So what should Australia's immigration policy be?
Higher fertility alone is not a sufficient answer. Creating policies that help Australian women find a balance between work and the care of children is also necessary but not sufficient. An immigration policy is needed that serves the economic needs of Australia while at the same time maintaining social cohesion. National security at a time of terrorism that transcends borders and peoples must be the other key criterion in determining who gets to be an Australian visitor or resident and who qualifies for citizenship.
An asylum-seeker from Pakistan who is idling his hours away in a refugee camp might be the right person that a miner in Kalgoorlie can train. But given Afghanistan and Pakistan's problems with Islamism, it is reasonable to ask questions about more than just his engineering degree.
How much schooling in madrassas has he had? How loyal is he to the creed of martyrdom? Is he willing to reject the political and social dimensions of Islam? Is he willing to learn the language, values, customs and convictions (in short the Australian way of life)? Will he promise to abide by the law -- Australian, not sharia?
Such questions can and should be asked of whoever is seeking admission into Australia. Merely to be fleeing a failed state or a civil war is not sufficient.
Nor can it be enough simply to have a family member already resident in Australia. Even a proven skill of use to the Australian economy is not a sufficient qualification. Australians have a right to be reassured those wishing to join their society will respect their traditions and principles.
It is abundantly clear from my visit to the Museum of Immigration that previous generations of immigrants were more than ready to sign up for those principles. But the world has changed -- and Australia's immigration policy must change with it.