Old Main, on Penn State's University Park campus
According to a recent article at Bloomberg, we are seeing fewer students taking advantage of higher education in the United States:

New foreign student enrollment in the U.S. dropped by 6.6 percent in the 2017-18 academic year, double the previous year’s rate of decline, according to the Institute of International Education (IIE). While the total number of international students in the U.S. grew slightly, the drop in new enrollees is the biggest since 9/11, said Rachel Banks, public policy director at NAFSA: Association of International Educators. The decline seems to be continuing this year, she said.

The report attributed the drop to multiple factors, including visa delays and denials, the “social and political” environment and the cost of attending a U.S. school. The administration’s hard-right immigration policies, such as banning people from Muslim-majority countries and separating children from their parents at the border, make prospective students and their parents feel “that we’re not a welcoming country,” Banks said.

The number of F-1 visas, the kind issued to foreign students going to school full-time in the U.S., dropped from about 644,000 in fiscal 2015 to about 394,000 in fiscal 2017, according to data from the U.S. State Department. Vanessa Andrade, associate director of international partnerships and program development at California State University, Northridge, said safety is always the biggest concern.

I'm not trying to get too political on you, but there is certainly a correlation between the Trump administration's rhetoric and the downward trend in international enrollments at colleges and university in the United States. I'm guessing that many people don't realize that other countries are major consumers of higher education in our country:

The more than 1 million foreign students in the U.S. contributed $39 billion and supported more than 455,000 jobs during the 2017-18 academic year, according to an analysis by NAFSA. The largest spending benefits went to California, New York, Massachusetts, Texas and Pennsylvania. NAFSA said education is one of the country’s biggest services exports.

“Education—particularly higher education—is a major American export,” University of California, Santa Barbara economics professor Dick Startz wrote in a Brookings Institution blog post in 2017. “When we provide a service that leads to foreigners sending money into the U.S., that’s an export with exactly the same economic effects as when we sell soybeans or coal abroad.”

So this is going to quickly become an economic issue as much as it is a diplomatic one.

And, like with domestic recruitment, institutions of higher education will be recruiting from a dwindling pool of international students.