Why?? Because some idiot picked a fight we have no part in. The Bush Dynasty and the endless wars of the middle east, The Clintons and Europe/Russia. Right now in the present, the bi partisan scum skirting the laws of our nation to send Troops and armaments to places like Syria and killing and displacing MILLIONS of people that we as a nation have to carry on our conscience.
This should disgust everyone regardless of nationality, political affiliation or any form of "justification" they may have formed as being the international keeper of peace.
Creating what is essentially a Shell Company in the form of NATO with ridiculous amounts of warmaking powers, whatever cosmetic protections there may be to guard against abuse, and then allowing that entity to run feuds and foreign policy of the United States WELL PAST THE POINT of an administrations tenure should never be allowed.
International treaties should NEVER be allowed to derive in perpetuity, the constitutional powers and duties entrusted to National institutions. And this is precisely what is and has been happening so far.