And yet Canada's population growth is almost entirely due to immigration (population growth by birthrate in Canada is flat or ever so slightly negative).
Immigration to Canada in the 21st century is not the situation you had in the USA pre-1914. At Ellis Island, as long it was deemed that you weren't insane, diseased, or a criminal, and could support yourself, you could get US citizenship in an afternoon.
Although Canada has the most liberal immigration policy of all industrialized countries today, it will still take an applicant years to become a Canadian.
I do not disagree on any of those counts, the fact still remains that impediments to immigration are not caused (either solely or entirely) by welfare states. And more to the point, they can have considerably more liberal policies than less progressive states.
So when i hear people attack socialized systems, especially in oblique manners such as this (rather than highlighting specific policies that need to change), my bullshit radar goes off.
Although Canada has the most liberal immigration policy of all industrialized countries today, it will still take an applicant years to become a Canadian.