It's the spring of 2012, that the [Barak] Obama administration would be embracing the argument that the Affordable Care Act was a tax, and that was going to, itself, be a political albatross.

When we're not a party, we sometimes file as amicus, as friend of the court, 25, 30 times a term, sometimes more. And in each of those cases, we've got to decide what position the government's going to take. And that is the solicitor general's job to make that decision.

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'm arguing for progressive positions on behalf of a progressive administration in front of a court who, before Justice [Antonin] Scalia's death, had a conservative majority that was quite conservative, frankly.

I think what Lawrence did was provide an assurance that gay and lesbian couples could live openly in society as free people and start families and raise families and participate fully in their communities without fear. And two things flowed from that, I think. One is that has brought us to the point where we understand now in a way even that we did not fully understand in Lawrence, that gay and lesbian people and gay and lesbian couples are full and equal members of the community.

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 do think it's true that a huge amount of the oversight that the White House engages in with respect to the Executive Branch is out of fear that somebody's going to do something crazy and drive the president off a cliff.