It's funny, because the hardest working people I have ever known have been immigrants, and the illegal ones today frequently die trying to get here, so are just as heroic as the people on the Mayflower were.

There probably have to be some sort of immigration controls, or there could be a mass exodus from Mexico by people fleeing the drug violence largely inspired by the US drug prohibition. Also, in general I would say beware of advocating simple solutions to complex problems. They are usually so simple because they leave stuff out.

Still, imigration not stampede-style and by qualified immigrants should be encouraged.