The United States is a nation of immigrants: 80 million from 150+ countries. Ten million have come from Mexico. To deny that reality, and try to walk back the clock on the nation's founding and progress, is hard to comprehend. In addition, the demographics already baked into the US population (and in the developed nations worldwide, as well as China) show that we need immigrants willing to come and work, as aging and declining populations see fewer and fewer tax-paying workers supporting more and more retired. These demographics are not a matter of opinion. They . . . are.