"My client appreciates the seriousness with which Chairman Grassley and his Senate colleagues are investigating these issues," Naik said in a statement. "Despite Meta and Mark Zuckerberg's claims of being free speech champions, they continue to silence my client, a whistleblower who stepped forward to report wrongful and illegal activity by the company that threatened the safety of its users, U.S. national security, and its employees." Sarah Wynn-Williams, Facebook's former director of global public policy, is sworn in to testify on Capitol Hill, on April 9. Mark Schiefelbein / AP file In Grassley's letter to Meta, he quoted three emails from Kaplan to Wynn-Williams, all three of which Wynn-Williams also quoted in her memoir. In one from 2016, Kaplan asked whether her U.S. citizenship test included the phrase "dirty sanchez," a sexual slang phrase and racial slur. In a second email from 2015, after Kaplan secured funding for a new position on her team, he emailed, "Who is your sugar daddy?"