If you’re a physician and a neighbor asks you a medical question, you’re probably happy to share your professional expertise. If you’re a heating and cooling contractor and a friend asks you about her furnace, you likely do the same. In that spirit, I think it’s time for business people to share what we know about immigration: that it powers economic growth and provides many other benefits to the country. At a time when many politicians are falsely scapegoating immigration for society’s ills — crime, housing shortages, labor issues and more — people with experience working alongside immigrants, employing them...