America Movil Faces Mexico Competition Rules, De Swaan Says

America Movil SAB, controlled by billionaire Carlos Slim, will face new rules as soon as this month that could force it to cut prices as Mexico’s dominant phone carrier, the head of the country’s regulator said. The stock slumped.

The Federal Telecommunications Commission plans around June 15 to apply restrictions to America Movil’s fixed-line unit in the market for leasing lines to rivals, Mony de Swaan, the agency’s president, said in an interview at the Bloomberg News Mexico City bureau yesterday. Next will be regulations for its mobile-phone unit, which could affect consumer prices, he said.