But right now we’re messing around with that incredible asset. Yes, we must control our borders; it is the essence of sovereignty. It has been a failure of both our political parties that the Mexican-American border has been so porous. So I am for a high wall, but with a very big gate — one that legally lets in energetic low-skilled workers and the high-I.Q. risk-takers who have made our economy the envy of the world — and for legislation that provides a pathway for the millions of illegal immigrants already here to gain legal status and eventually citizenship.