Why the government shouldn't do health care...

Mark Steyn says:

There are immigration laws on the books right now, aren't there? Why not try enforcing them? The same people who say that government is a mighty power for good that can extinguish every cigarette butt and detoxify every cheeseburger and even change the very climate of the planet back to some Edenic state so that the water that falleth from heaven will land as ice and snow, and polar bears on distant continents will frolic as they did in days of yore, the very same people say: Building a border fence? Enforcing deportation orders? Can't be done, old boy. Pie-in-the-sky.