Glenn Greenwald spells out the real problem with Guantanamo:

What made Guantanamo controversial was not its physical location: that it was located in the Caribbean Sea rather than on American soil (that’s especially true since the Supreme Court ruled in 2004 that U.S. courts have jurisdiction over the camp). What made Guantanamo such a travesty — and what still makes it such — is that it is a system of indefinite detention whereby human beings are put in cages for years and years without ever being charged with a crime. President Obama’s so-called “plan to close Guantanamo” — even if it had been approved in full by Congress — did not seek to end that core injustice. It sought to do the opposite: Obama’s plan would have continued the system of indefinite detention, but simply re-located it from Guantanamo Bay onto American soil. Long before, and fully independent of, anything Congress did, President Obama made clear that he was going to preserve the indefinite detention system at Guantanamo even once he closed the camp.