Just watched the first three parts of 'The Corridors Of Power', which examines the political, moral and ethical issues of US foreign policy from Ford to Obama. Although a BBC series, the subject matter will surely mean it is shown in the US. I hope that is so, as I would say that, so far, it is one of the most significant factuals ever produced, and is not to be missed.
WARNING - the series features uncensored footage of genocidal and terrorist atrocities, so can be a challenging watch. Definitely not for under 18's.