The F1 issue is absolutely real. Foreign students have been the secret sauce in keeping prices lower for US students for a long time now. Trump 1 and now Trump 2 presidencies have created financial crises at most universities just by making vague anti immigration gestures without even materially changing student visas. Presidents and provosts routinely make desperate oversea sales pitches to try to gin up the pipeline. I know of one major state university whose entire financial existence depends on visas from a few companies in Hyderabad.