For many years, it’s been clear that the detention facility at Guantánamo Bay does not advance our national security. It undermines it. This is not just my opinion. This is the opinion of experts. This is the opinion of many in our military. It’s counterproductive to our fight against terrorists, because they use it as propaganda in their efforts to recruit. ... Keeping this facility open is contrary to our values. It undermines our standing in the world. It is viewed as a stain on our broader record of upholding the highest standards of rule of law.