I think my comment is more generally how much worse Trump would be as President. Definitely not trying to defend Biden on this, but Trump's intention to expel protesters is truly dark and should be worthy of outrage too.

with the way US policing works (thanks to guys like Biden who spent decades empowering them) immigrants are turned over to immigration authorities already all the time, so people are being 'expelled' already. Trump is just saying how it works out loud.