You and the ACLU have the right to voice your opinion, but The Commander in Chief has the right to initiate military action anywhere in the World without seeking the permission of the Supreme Court.
in my opinion you are wrong in your assessment of “The Authorization for Use of Military Force, which was passed in the days following 9/11, expressly limited its authorization of force to those responsible for the attacks — in other words, al-Qaida and the Taliban.”
Those responsible for the attacks were Islamists, which include al-Qaida and the Taliban, but are not limited to them. So it doesn’t matter whether “ISIS is al-Qaida” or not.
You are wrong to defend American traitors fighting against US forces, and I am happy that “the president has inherent authority as commander-in-chief to detain U.S. citizens, anywhere and everywhere, as he sees fit,” should they take up arms against the USA. A military court could have ordered the traitor to be shot by firing squad for being a “known enemy combatant” for ISIS. If you undermine the ability of US forces to hold traitors incognito for questioning, I figure they will revert to the legal defence under the Geneva convention that unlawful enemy combatants do not qualify for treatment as prisoners of War.
“ In the United States, the Military Commissions Act of 2006 codified the legal definition of this term and invested the U.S. President with broad discretion to determine whether a person may be designated an unlawful enemy combatant under United States law.”
The Constitution states “Whoever, owing allegiance to the United States, levies war against them or adheres to their enemies, giving them aid and comfort within the United States or elsewhere, is guilty of treason and shall suffer death.” That is pretty clear.
Your attacks on the authority of the President at a time of War comes pretty close to treason itself. You are offering the enemies of the United States “aid and comfort.” Shame on you, while better Americans than you are in combat against those enemies.
If you want to employ legalisms why don’t you consider whether “The ISIS War on the West Is Illegal”? And why didn’t you raise the legality of the war on ISIS when President Obama launched it? What about the legality of his authorising the CIA to impersonate Rotary Polio Plus inoculators in Pakistan so they could collect DNA samples to identify the location of Osama Bin Laden’s family, in order to carry out an execution he watched live on TV from the White House? Where was ACLU then? Since this extralegal execution, over 50 of our inoculators have been executed by the Taliban in retaliation, and the only place polio is still killing and crippling children in in the Taliban-controlled tribal zone on the Afghan-Pakistan border.