In the United States, the acquisition was reviewed by the Federal Trade Commission (FTC) rather than traditionally by the U.S. Department of Justice, as the agency had raised more concerns over mergers and acquisitions in the Big Tech sector in the last decade.[38] U.S. Senators Elizabeth Warren, Bernie Sanders, Sheldon Whitehouse, and Cory Booker expressed their concerns about the merger to the FTC as part of the FTC's investigation, saying that both companies have "failed to protect the rights and dignity of their workers" and that the merger should be opposed if "the transaction is likely to enhance monopsony power and worsen the negotiating position between workers and the parties."[39] In addition, the U.S. Securities and Exchange Commission (SEC) reviewed potential claims that investors close to Kotick used insider trading prior to the acquisition announcement;[40] Activision Blizzard said they would fully cooperate with the SEC's review.[41]