The pair are Trump supporters, and produce videos and blogs espousing their conservative beliefs. During the grilling, members of the GOP alleged that Facebook had discriminated against Diamond and Silk. It was later exposed as a complete hoax. If you'd like to watch along and see how your tax dollars are being spent, there will be a webcast.

Facebook told Reuters that even though it won't attend, that it looks "forward to a continuing dialogue with members of the committee about Facebook's strong commitment to being a platform for all voices and ideas." In the meantime, this will give Zuckerberg extra time to work on all of the lawmakers' follow-up questions from the other week.