[Retric]

Companies are free to higher Canadian workers in Canida etc.

You can even get an Indian worker in Mexico and import the results free of charge. But, limiting immigration is one of the fundamental functions of government, and it's not going away any time soon.

PS: I also somehow doubt you would be OK with al qaeda corp setting up shop an then importing large number of people.

[johncolanduoni]

So the US wasn't a government until 1875 when the first immigration law was passed?

https://en.m.wikipedia.org/wiki/Page_Act_of_1875

[Retric]

American Indians where removed from US soil long before 1875. See: https://en.m.wikipedia.org/wiki/American_Indian_Wars further these go back to 1540.

[DrScump]

  You can even get an Indian worker in Mexico

Have you actually researched Mexican immigration law?