Absolutely not. There is a reason I’m personally noping out of the US and told every international person at my former workplace to do the same so…

Disclaimer, was an international student for many years, not a law expert

I think realistically, an administration has many ways to make it incredibly difficult to recruit international students even without a blanket ban…

Such as making overseas visa applications even more difficult (it already happened between US-China and various Muslim countries during Trump’s first term), making legislation that require more from unis if they have international students, general societal xenophobia, …

I’m not sure if an actual blanket ban would be permitted under US law though

Edit: that’s just my take on whether a blanket ban is feasible. If you ask me personally I recommend every international student to get their rear end out of the US as soon as possible so…