It precisely and explicitly demands that the government restrict supply of foreign labor, as that increases the fair market value of American wage earners. It increases the opportunities for young Americans to trade their labor for a start in life, to support their families, and to make our nation stronger. Importing foreign labor makes it more difficult to justify hiring Americans, and undermines the nation's long term success for short term gains. It is effectively an Anti-investment.

If the clearing rate is equal to the cost of an engineer at a tech firm in SF, the education budget for a small town in Alaska wouldn't afford it.

Your formulation isn't wrong, however it covers only one scenario. What happens when the locality cannot afford the cost to attract people to their region?

This is not even theoretical, its what happened to the rest of the world, as their best and brightest immigrated to America or Europe.

You could say "them's the breaks" and I would understand. However people vote for solutions, so how would you cover the worst case scenario?