Is your argument that they only have rights under the Constitution if they are captured and we are free to otherwise kill them? How can that be the desired outcome? How can only one class of Enemy Combatants, those captured, have rights as US citizens?
The ones that we killed are denied their rights under the 4th, 5th and 14th Amendments!!
Do you see the rather large inconsistency in the Librul logic of granting Enemy Combatants rights as a citizen under the US Constitution?
Yes. Assuming we're talking about them being in a foreign country on foreign soil, the Constitution and its protections only apply to them once we capture them. If they're currently engaged in active hostilities against us, we have every right to kill them. If they are not currently engaged in active hostilities against us, it is the right thing to do to take them in, but killing them would not be illegal.
The reason only people captured by the U.S. have Constitutional rights (again, read my post you quoted that quotes the Constitution and demonstrates it is unquestionably not reserved for U.S. citizens, as the Supreme Court has always found and as is plain in the text, so they're not getting rights as U.S. citizens, they're getting Constitutional rights) is because the Constitution only applies to people who fall under U.S. jurisdiction. An Afghani is subject to Afghan law, but if we place him under U.S. custody, he is now subject to American law as well. This is because the Constitution decrees it.
It has nothing to do with "liberal logic," it's the logic of the framers of the Constitution. Laws are not outcome based but principle based. Sometimes laws have negative outcomes, for instance a guilty person is found innocent, because the laws are designed to protect more significant, inalienable rights and principles of justice than any one court case could effect. And of course, again, as has been made quite clear and is frankly incontrovertible, the Constitution does not only apply to U.S. citizens so they're not being given "rights as a citizen under the US Constitution," but rather given the Constitutional rights the Constitution protects and assures for all persons.
Why anyone would have a problem with the Constitution granting rights to anyone under its custody and following the law on that remains to be seen. There are numerous laws against all forms of terrorism or support for terrorism that make it extremely easy to convict anyone actually involved in any way with terrorism to a life sentence in Supermax (from which no one has ever escaped). Between 9/11 and 2008, we convicted 195 people of terrorism charges (a 91% conviction rate) in federal court, they're now in prison and no longer pose a threat. Terrorists aren't X-Men, there's no reason we have to break the law or establish a needlessly complex new system just to try them. Terrorists are criminals and have been tried successfully as such for decades. Why would we even need to violate the Constitution and repudiate our justice system to stop them? It works just fine, and it also affords us the opportunity to prove that open democracy works and is preferable to radical Islam, it provides justice and keeps us secure, unlike radical lawlessness.
Imagine two terrorists walking down a street in Durkadurakstan, a Marine sniper kills one but the second is captured and brought to trial in an American criminal court with imaginary rights as a US Citizen.
When did he obtain these rights? Did he always have them? What about his friends who was sniped? What happened to his rights?
He wouldn't be given imaginary rights as a U.S. citizen, he'd be given Constitutional rights as someone in U.S. custody.
He obtained the rights when he was captured and detained by agents of the U.S. His friend never had those rights because he was never under U.S. jurisdiction. The rights are universal to all persons under the jurisdiction of the U.S., not all persons everywhere.
So, since we no longer have the concept of Enemy Combatant, don't we have to Mirandize the newly minted US Citizen?
Wait. It is illegal for the Military to arrest American citizens except in VERY limited places and fashions. So I guess we should just pull our troops out and send in brigades of Cops.
There is a REASON this is called a WAR and not a POLICE action.