Mexican President Enrique Peña Nieto signed into law Friday a bill that ends the monopoly of state-owned Petróleos Mexicanos in oil and gas, opening new horizons for private-sector investment in the world’s ninth-largest oil producer. The energy bill, Mr. Peña Nieto’s wager to lift stagnant oil production and unleash economic growth, was passed by lawmakers in just 10 days. Congress gave final approval on Thursday of last week after two days of debates, and a required majority of state legislatures, 26 of the country’s 31, approved the constitutional amendment by this week. “This year, we Mexicans have decided to overcome myths and taboos in order to take a large stride toward the future,” Mr. Peña Nieto said in a speech at the National Palace. Mr. Peña Nieto became the first president in more than 50 years to propose and pass in Congress changes to the constitution on the […]