A s the Information Revolution accelerates around the world, upending everything from the international balance of power to the future of work, American culture and American politics are undergoing perhaps their most profound upheaval in the 250 years since the 13 colonies declared their independence. It could hardly be otherwise. The greatest wave of immigration in American history, with over 70 million immigrants arriving in the U.S. since 1965, is refashioning the demography and culture of