Would White-Collar Immigration Be a “Crisis”?

According to a Ted Cruz ad, if bankers, lawyers, and journalists were crossing the Rio Grande, immigration would be called a crisis.

On the other hand, speaking as a mathematician, when mathematicians “crossed the border” after the Soviet Union collapsed, I did not regard it as a crisis.

On the gripping hand, many mathematicians inside the United States did regard an earlier wave of refugee mathematicians as a crisis. In particular, Harvard kept out mathematicians fleeing the National Socialists. (Harvard's motto: We're Harvard; we can get away with anything.)

The real question: Does Ted Cruz have the decency to be embarrassed at this pandering?