It will interesting to see the decline in foreign students - first indicator could be the Fall 2017 enrollment numbers. Currently we have foreign student enrollment across the United States in the one million range. Assume during eight years of a Trump administration and we have a 50% drop in foreign students. Most of the foreign students pay out-of-state tuition - assume the average is $25,000 per year. Lost revenue per year in today's dollars would be $12.5 billion per year. Dear state legislatures and trustees - your foreign students subsidize your U.S. students.
Link to a report by the Los Angeles Times.