On July 23, the U.S. Senate passed a bill aimed at protecting whistleblowers who report criminal violations of antitrust laws to authorities. Titled the Criminal Antitrust Anti-Retaliation Act of 2015, S. 1599, this bill introduced by Judiciary Committee Chair Senator Chuck Grassley (R-IA) and Ranking Member Senator Patrick Leahy (D-VT) becomes the second time similar legislation has been passed unanimously by the Senate. The U.S. House of Representatives failed to consider the version passed by the Senate in 2013. Whistleblower protections have been passed in multiple areas in recent years, including banking and financial services, and the proliferation of such statutes may indicate a better likelihood of success for the current version going before the House. The bill would prohibit an employer from discriminating against a whistleblower who reports antitrust violations to either his or her employer, or the government. The bill protects a whistleblower who has a reasonable belief that a law has been violated or who cooperates with an investigation or legal proceeding.