I guarantee that foreign students do not come close to paying the full cost of their education. Graduate students come to the US in droves and rarely bring money from foreign sources. Every student is seeking a US funded stipend.
On top of that you can be sure they are getting their free medical care, food stamps, and what else? A few of them have killed some of us...so there is incarceration/trial costs on top of that. It’s a loosing situation. Our kids need to fill our colleges. Often classes are full and our kids (happened to mine!) can’t get in.