and yeah, a wartime act, that the President is trying to desperately trying to stretch the definition the definition of war to make it applicable. You are free to be okay with executive declares its a war, and arbitrarily determines people itself has just determined the law should apply to.
Again it's not about Garcia, it's about the how. garcia is just face of it. it's about if you going to do remove people, do so lawfully. don't remove someone who has do-not-remove order. and if you haven't been lawful, fix your mistakes and then remove them lawfully.
"kidnapping and removing people just because you have declared them terrorist without due process or recourse" is scary. if the person is what you claim they are, following the lawful process should be straightforward and simple. go prove your case and remove the persons. Allowing them to do is allowing the government to declare anyone a terrorist and remove them to a foreign prison. Since there's no due process, there's no way to ascertain if Government's claims are even true, and that's even if anyone is made aware the person has been disappeared.
That same government (if not this admin, maybe another one) with that type of power today can declare you Riveting a terrorist tomorrow and then ship you off to some gulag in Siberia. Well, you will argue you are US citizen, they can't do that. But how do you prove you are a US citizen, when there's no due process for you to do that. And people say its okay for the government to do that.
That's what at stake here. not Garcia's legal status, not Garcia's like-ability.