I voted for Obama twice and can't say I've been universally impressed with his decisions. I look forward to seeing how the story develops. Everyone involved has denied that this is an accurate description of the program, but then again that is probably what you expect.
That being said, it does seem somewhat reasonable to me that the US is monitoring metadata about who is contacting who overseas. If you are making calls to and receiving calls from numbers originating in Afghanistan that appear on CIA lists of contacts associated with anti-American activity, that information should be used to get a warrant to listen to the content of those communications.
On the other hand, I would feel better about the surveillance state if there were some evidence that it was effective. In reality most of this surveillance is probably a waste of resources and potentially distracting to real law enforcement. Our rights are obviously already interpreted through a "prism" - it would be beneficial if people could make utilitarian assessments of these practices.