To be great again, America needs immigrants

Hard economic logic is unlikely to turn the anti-global, anti-foreign tide

What makes America great?

The standard answers point to qualities that the United States is said to have in greater abundance than its peers in Europe and Japan. There are the innovations that pour out of Silicon Valley companies and elite universities, the flexibility of a work force relatively unconstrained by union rules, the dynamism of entrepreneurs less hamstrung by an oversize welfare state and of a more mobile population willing to move to where the cutting-edge jobs are mushrooming.

In short, the standard innovation theory of American exceptionalism is all about qualities that make each worker more productive. Today, nearly all