Somebody who is detained is not released until the evidence is all looked at and it’s determined that they are not a danger. It doesn’t matter whether they impeach him; he can’t act as President from Gitmo. So while they are processing him to find out if they made a mistake in classifying him as an enemy combatant, somebody else acts as President. If Congress would impeach and convict they would remove him from office and whoever was next in the line of succession would not only ACT as President but would actually BECOME President.
Impeachment is irrelevant. It’s not a matter of booting somebody out of office; it’s a matter of keeping an enemy combatant from destroying the country.
That’s why I talk about the end game ... the military knows it’s going nowhere. You’re not going to find any military person doing that ... :-) ...
The first military person who might be stupid enough to even speak the first words about doing so, would be out of the military in two seconds, if not in a military prison ... LOL ...