Watch what happens on Twitter. One thing leads to another very quickly. And in an ironic sense, even though it's such a democratic form of communication, there's a funny way in which it leads to a hardening of a conventional wisdom much more quickly than might happen if you were reflecting on it a little more.

I had a great deal of independence from the president and the White House during the entirety of my five years. And I'm not sure exactly what that is, but our friend, Walter Dellinger, has a theory about it, and I think he's probably right. And the theory starts with the fact that I worked in the White House for a year and a half before coming over to the position of SG. And because of that, when I was nominated, there was some chatter out there that, "Oh. They're putting a political hack in. This has never happened before."

The cases involving the question of whether U.S. courts should be open to claims of international human rights violations brought by foreign persons against foreign government officials. And the State Department on the one side has got a very consistent and powerful view that U.S. courts should be open to those claims because there needs to be a place in the world where they can be brought. And those human rights norms ought to be real and enforceable, and we ought to be a beacon to the world.

The fact that you have a policy of such consequence directly affecting millions of people and you have a legal question of great consequence about the scope of the president's authority to act in implementing the immigration laws in this way and you have a one-line decision from the court affirming by an equally-divided court, it's an inevitable consequence of where we are.

There was this point about, you know, the basic point there as well - this statute treats some parts of the country different from others, and what's the justification for that? Well, you know, I had eight million things to say about that, but he put it in such a sharp, excruciating way that it was just very hard to handle it effectively.

Sometimes one of the justices, because they're, you know, they're brilliant lawyers themselves, can put the question in a particular way so that, even if you've prepared to talk about the topic, the question is put in such an excruciatingly difficult way that there's just no good way to handle it.

Justice [Sonia]Sotomayor said, "Let's talk - you want to talk about the tax power."And I got like a 10-minute run on the tax power. And, boy, was I glad I did because I was able to get across this idea that, yes, this is a narrower ground on which you can affirm it. And I think everybody agrees. I think even the dissenting justices ultimately in the case agreed that, if Congress had expressly called it a tax, it would be indisputably constitutional.