Like a great glacier carving valleys, feeding rivers, and depositing soil, immigration is reshaping America’s character and future, her economy, workforce, family structures, demography, culture, cuisines, languages, and politics. Yet of all the first-order policy issues facing the nation, this may well be the hardest one for us to approach rationally. http://sethiinternational.org/index.php feels a special skittishness and ambivalence about the subject. Our self-contradictions abound. Defining ourselves as a nation of immigrants, we also view immigration as a threat. Defending our...