From the article:
"This is something that has been proposed again and again," said Michael Clemens, a development economist at the Center for Global Development, a prominent Washington, D.C., think tank.
Clemens cited the examples of Chinese exclusion, a 1924 "legal flush" to remove Eastern European immigrants and the end of the Bracero program, a temporary worker exchange program between the United States and Mexico.
"In every one of those cases, the justification rolled out in the political sphere was raising wages for U.S. workers," Clemens said.
"In all of those cases there is no sign at all that it happened."
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