I was fortunate enough to have this career that spanned the public and private sectors so I thought I was well-prepared to be able to take on some of the challenges that Uber presented.

I think we are, certainly in the Department of Justice, a fan of some of the data-mining techniques that will allow us to more effectively zero in on fraud.

I was always more interested in public service. What I discovered is you could practice law and be a public servant.

I fell in love with this idea that you could press a button and an SUV would show up. That idea of bringing mobility to places where it hadn't been an easy option - that was a pretty compelling mission. It was a huge, huge challenge.