Senator Mark Warner has asked the Federal Trade Commission to investigate the legality of Facebook's emotional manipulation study. In a letter to the Commission, Senator Warner stated that "it is not clear whether Facebook users were adequately informed and given an opportunity to opt-in or opt-out." He asked the FTC to conduct an investigation to see "if this 2012 experiment violated Section 5 of the FTC Act or the 2011 consent agreement with Facebook," two issues raised in EPIC's earlier complaint. "The company purposefully messed with people's minds," wrote EPIC in a complaint to the Commission. EPIC charged that Facebook violated a consent decree that required the company to respect user privacy and also engaged in a deceptive trade practice. EPIC has asked the FTC to require that Facebook make public the News Feed algorithm. For more information, see EPIC: In re Facebook, EPIC: In re Facebook (Psychological Study), and EPIC: FTC.