MEXICO CITY (Reuters) - Mexico's lower house of Congress gave general approval on Tuesday to legislation that aims to rein in telecoms tycoon Carlos Slim and broadcaster Televisa to encourage more competition in the phone and TV markets. The approval was a victory for President Enrique Pena Nieto, who has faced political opposition and a sluggish economy this year after he pushed a series of reforms through Congress in 2013 that were designed to spur faster growth in Mexico.
