Remember Chapter 1 of A. Smith and Chapter 7 of D. Ricardo

Here's a letter to the Wall Street Journal:

Darrell West might be correct that a more-open immigration policy is easier to sell to the public if that policy focuses on admitting foreigners who are very smart and well-educated ("We Need an Einstein Immigration Policy," July 16).  But as a matter of economics it's untrue that only high-skilled workers have "the potential to enhance American innovation and competitiveness."

By relieving engineers, web designers, chemists, and other high-skilled...