Forty years of easy entry by illegals, porous and non-existent border barriers, lax enforcement of our immigration laws, abundant employment and welfare benefits, and the strong support of liberals in this country, might have something to do with it.
LOL, when you put it that way I guess if Canada was offering all of that I would be heading north also.
We are too prosperous and have been shamed into thinking that we must share the wealth that our hard worked has produced. I think I will reverse the trend and become a tightwad.