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WASHINGTON, DC - APRIL 09:  Facebook CEO Mark Zuckerberg arrives at a meeting with U.S. Sen. Bill Nelson (D-FL), ranking member of the Senate Committee on Commerce, Science, and Transportation, April 9, 2018 on Capitol Hill in Washington, DC. Zuckerberg is scheduled to testify before a few Congressional committees this week on the mass users data Facebook has shared with political operatives.  (Photo by Alex Wong/Getty Images)
WASHINGTON, DC - APRIL 09:  Facebook CEO Mark Zuckerberg arrives at a meeting with U.S. Sen. Bill Nelson (D-FL), ranking member of the Senate Committee on Commerce, Science, and Transportation, April 9, 2018 on Capitol Hill in Washington, DC. Zuckerberg is scheduled to testify before a few Congressional committees this week on the mass users data Facebook has shared with political operatives.  (Photo by Alex Wong/Getty Images)

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    See Mark Zuckerberg on Capitol Hill

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See Mark Zuckerberg on Capitol Hill

Facebook CEO Mark Zuckerberg traded in his typical t-shirt and jeans for a suit while meeting with lawmakers on Capitol Hill. He is set to testify this week about Facebook's data sharing practices.

See Mark Zuckerberg on Capitol Hill

Facebook CEO Mark Zuckerberg traded in his typical t-shirt and jeans for a suit while meeting with lawmakers on Capitol Hill. He is set to testify this week about Facebook's data sharing practices.