Facebook CEO  Mark Zuckerberg’s absence at a U.K. Parliamentary hearing on election interference and fake news drew the ire of international leaders this week—but it’s not the first time a CEO declined such an invitation.

Google left its seat empty at a Senate Intelligence Committee hearing in August, after its offer to send its senior vice president of global affairs and chief legal officer, Kent Walker, was rejected, leaving some senators asking if it was because the Mountain View, California-based company was arrogant or had something to hide. The committee had asked for a CEO-level representative.