While it remains, sadly, Constitutional for the US to enslave people, and the various iterations of statute law abolishing the export slaves first in 1794 and then the slave trade more generally later probably do not bind the operations of the US government only other persons subject to it, the Constitution does require that those enslaved—and those being committed to CECOT are not merely being removed they are being enslaved and trafficked—may only be so enslaved as a punishment for a crime of which they have been duly committed.
So while the actual process in the Alien Enemies Act removals is executive fiat, and the due process under existing law for deportation (which is not afforded in Alien Enemies Act removals) is administrative rather than criminal, the Constitutionally-mandated process for those receiving the sanction being applied in the Alien Enemies Act process is normal criminal process.
It’s like civil trespass. You don’t need a trial to kick someone off your property. And when the police remove them, they’re not being punished.
In the many years we've been discussing similar things I've never known you to change your mind on even the smallest point of any subject. I frankly just don't respect you enough to put more energy into this conversation.
https://en.m.wikipedia.org/wiki/Due_process