If people can live openly and be equal, then you have to have a pretty strong reason to say they can't get married.

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.

Quite often there's a great deal of disagreement within the executive branch about what we should do. Some cases are pretty straightforward, but a lot of them aren't.

The moot court process in our office when we get ready, we - everybody, including the SG, does two moot courts for each argument. And they are phenomenal, and they predict 90 percent of the questions that I get asked, at least 90 percent.

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.

There was only really one time that I had a substantive interaction with the president [Barak Obama] directly, and that was in 2013 when we were deciding whether to file a brief in the first gay marriage case, the Perry against Hollingsworth case. That was a weighty decision about whether the United States government was going to come in and say that heightened scrutiny ought to apply and some state bans on same-sex marriage ought to be unconstitutional. And that was the one time in my tenure where I thought I ought not make this decision without talking to the president.

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.