A real politician who will probably run for president! Now there's a bit more legitimacy to this filibuster, perhaps even more than Ron gave.
It's good of Rubio to clarify that this all isn't about Brennan really. Brennan will get confirmed, which many will say proved Paul's efforts pointless.
Rubio seems to think this is more about the importance of congressional inquiries to the executive branch, not just individual civil liberties.