MEXICO CITY—President Enrique Peña Nieto is negotiating a deeper revamp of the country’s nationalistic energy laws than his initial proposal this summer, aiming to put Mexico’s laws on a par with other top oil producers and to attract greater interest from private oil companies. Top government officials and their counterparts in the conservative National Action Party, or PAN, are in advanced talks to seal a deal that would give private energy firms a share in oil production and licenses designed to tap shale gas deposits and ultra deep-water oil, said three people involved in the negotiations, who cautioned that hurdles remained. Mr. Peña Nieto this summer became the first Mexican president in decades to formally propose changing the country’s constitution to end the state monopoly on oil and gas. That monopoly dates back to 1938, when former President Lázaro Cárdenas expropriated the oil industry and turned petroleum in a […]