Consumers Union, Consumer Action, Consumer Federation of America, National Association of Consumer Advocates, National Consumer Law Center on behalf of its low income clients, National Consumers League, Public Citizen, and Public Knowledge thank the Federal Communications Commission (FCC) for its work to encourage the development of a caller ID authentication system to address fraudulent call spoofing, and are encouraged by the support for the project revealed in the submitted comments. This work is timely: as we noted, increasingly we hear from consumers about fraudulently spoofed calls that evade call-blocking mechanisms, threaten them with scams and fraud, and disturb their privacy. Thus, we reiterate our call for the FCC to take rapid action, to require full participation by providers, and to take the lead in establishing effective standards for consumer protection.