Wouldn't it be nice if we had an immigration policy that could regulate such a thing. You know, limit the number of people that can enter in a given year?

That is a damn big dump of people into our system. Schools, welfare, housing, there will be shortages and overcrowding in them all. No country is equipped to increase their populate like that. I'd wager that bringing in a million in one year (which is the current projection at the border) strains the school systems across the country.