"I think The Donald believes he can turn the clock back and pretend that the last 40-50 years of the emergence of Asia and poorer parts of Europe, S America can be swept aside as a reality of economic development"
What I think that he is trying to do is to shield America as much it can be done from external competition. He does not mind if Bangladesh produces garments for export to America, but he seems to mind other countries producing high tech or capital-intensive goods at lower prices than those being charged by their American counterparts. It is a policy that aggravated the situation in America and in the rest of the world during the great depression.
"the United States has adopted numerous measures designed to maintain or stimulate domestic industry or to tighten economic policies both domestically and towards foreign trading partners. Reflecting isolationist and nationalist economic theories, these measures are the anchor for a return of economic frontiers to the United States. " In other words, lets close the country to the international movement of capital, goods and, of course, people.
