welcome back to "velshi & ruhle." mark zuckerberg is testifying before congress. today is about libra. libra is his battle plan for global digital currency. >> i believe this is something that should be built. i get that i am not the ideal messenger for this right now. we faced a lot of issues over the past few years and i am sure a lot of people wish that anyone but facebook who are helping to propose this. there is a reason that we care about this. that's because facebook is about putting power in people's hands. i don't know if libra is going to work. i believe it is important to try new things as long as you are doing it responsibility. >> trying new things and including that haircut. >> members of the house in the committee also used the time to