At some points in U.S. history, notably the 1990’s, the country did see a period of high economic growth that did not depend on immigration. “The 90’s were a special decade,” said Giovanni Peri, a labor economist at The University of California, Davis. The 4 percent growth at that time had more to do with increased productivity because of technological advances, innovation, and tax policy. Immigration did contribute to the growth, according to Peri, but only a portion.
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