People at civil-liberties organizations say it's a sea change, and that it's very clear judges have begun to question more critically assertions made by the executive. Even though it seems so obvious now, it is extraordinary in the context of the last decade, because courts had simply said they were not the best branch to adjudicate these claims - which is completely wrong, because they are the only nonpolitical branch. They are the branch that is specifically charged with deciding issues that cannot be impartially decided by politicians.

It is afraid of an informed, angry public demanding the constitutional government it was promised - and it should be.

Citizens with a conscience are not going to ignore wrong-doing simply because they'll be destroyed for it: the conscience forbids it.

There's a real danger in the way our representative government functions today. It functions properly only when paired with accountability.

The new iPhone encryption does not stop them from accessing copies of your pictures or whatever that are uploaded to, for example, Apple's cloud service, which are still legally accessible because those are not encrypted. It only protects what's physically on the phone.

I believe that when [senator Ron] Wyden and [senator Mark] Udall asked about the scale of this, they [the NSA] said it did not have the tools to provide an answer. We do have the tools and I have maps showing where people have been scrutinised most. We collect more digital communications from America than we do from the Russians.

I think that's actually what's missing from government, for the most part. We've got a lot of policy people, but we have no technologists, even though technology is such a big part of our lives. It's just amazing, because even these big Silicon Valley companies, the masters of the universe or whatever, haven't engaged with Washington until recently. They're still playing catch-up.