Quoting the Geneva Convention is pointless. The USA has thrown it out of the window and effectively rendered it useless, and it is no longer relevant to use the GC as a guide as to how humans can be treated in captivity by the USA.

The troubling part of all this is what does the USA base it's moral stance on? What are the values it places on the life of any human, or on their rights as living people? Obviously the constitution means squat to those in charge, especially if you are not an American (and if you are and American - remember how the rednecks defended the rights of the Dixie Chicks to disagree with the war?). Calling a prisoner a 'Unlawful Combatant' is lawyer-speak and a method of further dehumanising the enemy, to make it easier to torture or kill them.

As for children, we cannot expect reasonable behaviour from the US abroad until their own house is in order at home:

Junvenille Death Penalty Cases (American Bar Association).