Facebook CEO Mark Zuckerberg is about to join a short list of chief executives from Silicon Valley who have stepped into the Capitol Hill hot seat -- with mixed success.
Stories this photo appears in:
Facebook bans foreign ads in Ireland's abortion vote
Facebook is banning foreign groups from buying advertisements related to Ireland's abortion referendum, the company announced Tuesday.
What Mark Zuckerberg has to fear in testifying before Congress
Facebook CEO Mark Zuckerberg is about to join a short list of chief executives from Silicon Valley who have stepped into the Capitol Hill hot seat -- with mixed success.

