"I can't pardon somebody who hasn't gone before a court and presented themselves, so that's not something that I would comment on at this point," Obama said. "At the point at which Mr. Snowden wants to present himself before the legal authorities and make his arguments or have his lawyers make his arguments, then I think those issues come into play. Until that time, what I've tried to suggest — both to the American people, but also to the world — is that we do have to balance this issue of privacy and security."
http://mashable.com/2016/11/21/obama-pardon-edward-snowden/#.AazOWU6dOqM