There is direct national security question that is raised by default that the knowledge gained on such educational material has a duel purpose, would it not be easier to ban such studies to foreign students entirely?

I appreciate it is harsh, but when one considers the ramifications of such knowledge being transferred and or manipulated at a field level or weaponized against a civilian population, I think the answer is clear.

We live in extraordinary times, that call for extraordinary measures to safeguard our people, country and way of life from radical elements.