The head of the Federal Communications Commission circulated a proposal Wednesday designed to close loopholes, reaffirm current anti-robocall rules, and encourage wireless and wireline carriers to do more to fight against unwanted telemarketing calls and spam text messages to consumers. "USTelecom supports the FCC's efforts to provide consumers with options to mitigate unwanted phone calls, and to take strong enforcement actions against illegal robocallers," spokeswoman Anne Veigle said. Sen.