My job was always to pull a vote over from somebody who was likely to be at least at the outset disinclined to agree with me on some things or at least disinclined to agree with the policy that I was defending.

I do a little bit of hand-holding on the big cases. You know, like health care, I'll call over and say, "Don't worry. We've got it under control. We have the best people working on it. We're on schedule. Stay calm." So, those kinds of things.

Very quickly the lawyers in the Justice Department pulled together a set of recommendations about how we ought to defend the law as a constitutional matter. And it was the lawyers in the Justice Department who thought that it was important to include the tax power argument as part of it.

One thing I've experienced and I feel really grateful for now that I'm on my way out is that I felt that the justices gave that back to me. I really did. You know, of course, you can have some sharp exchanges. That's the nature of the thing, and that's fine. But really in the main I felt like the tone from them was, "Yeah. We may not agree with you, but we're going to have a discussion about this." And it did.

The part that the public sees is the arguments up at the podium and the briefs that we file. But a significant part of the job - in fact, I'd say I spend more of my time on this part of the job, which is deciding what the position of the United States will be in the cases that we're going to be participating in before the court.

I don't think this is a situation where you can say that Congress was avoiding any mention of the tax power. It'd be one thing if Congress explicitly disavowed an exercise of the tax power. But given that it hasn't done so, it seems to me that it's - not only is it fair to read this as an exercise of the tax power, but this court has got an obligation to construe it as an exercise of the tax power if it can be upheld on that basis.

There was a huge movement that led up to [gay marriage legilization], and I played a small role in the great scheme of things. But it was really a privilege to get to do it.