On Thursday's broadcast of MSNBC's "All In," House Consumer Protection and Commerce Subcommittee Chairwoman Jan Schakowsky (D-IL) discussed the subcommittee's hearing with the CEOs of Facebook, Google, and Twitter and said that the hearing's purpose was to send the message to tech companies "That we're going to regulate. We're going to legislate." And that there "have to be some limitations, not just on advertising."