What war powers have been abrogated from anyone? These are detainees 8000 miles away from any combat zone. Congress passed the DTA creating these tribunals, and Bush signed it. The Secretary of the Navy then gutted the process in his enacting regulations. Where did the Secretary of the Navy get the power to interfere with the laws or the war powers of Congress and the President?
The power to execute war includes the power to determine where and for how long prisoners taken in that war are held, regualr or irregular. This should be obvious to anybody, that it isn't to you explains a lot.
The purpose of taking combatants off the battlefield and putting them in confinement is also obvious, they can't kill any more Americans. The court has no, I repeat no, role at all when aliens are taken prisoner and held outside the authority of Article III courts.
Except for liberals who favor the oligarchy.
Like you.