The human rights terrain changed over the last four years, but there appears to be more for the US to do, according to Eric L. Lewis (and its not going to happen, according to Benjamin Wittes):
Yet when it comes to human rights and security, Mr. Obama has become trapped by his instinctive distaste for political combat. He backed off, under pressure, from his pledge to close Guantánamo. He allowed Congress to obstruct his plans to move detainees to the United States, even when their innocence was beyond doubt. He reversed himself on trying terror suspects in civilian courts. He embraced the principle of indefinite detention without trial, albeit with enhanced procedural safeguards. And he expanded the use of drone strikes, including the targeted killing of American citizens, without accountability or oversight.