Firefighters work to extinguish a massive blaze triggered by a leaking pipeline in Tlahuelilpan, Mexico on Friday night. At least 66 people were killed. Francisco Villeda/AFP/Getty Images hide caption

People line up to buy gasoline at a gas station in Morelia, Michoacan, on Jan. 8. Michaocan is one of several Mexican states where fuel shortages have been reported. Enrique Castro/AFP/Getty Images hide caption

Mexican President-elect Andrés Manuel López Obrador waves to supporters during his national tour to thank those who voted for him in the July 1 elections, at the Plaza de las Tres Culturas in Mexico City, in late September. Rodrigo Arangua/AFP/Getty Images hide caption

Mexico's presidential plane, a Boeing 787-8 Dreamliner called the Jose Maria Morelos y Pavon, arrives at Benito Juarez International Airport in Mexico City in February 2016, when it was brand new. The airplane was one of the most expensive presidential airplanes in the world. Mexico's next president is trying to sell it. Hector Vivas/LatinContent/Getty Images hide caption

Andrés Manuel López Obrador won Mexico's presidential election and celebrated Sunday night with his supporters in Mexico City's Zócalo Square. Pedro Pardo/AFP/Getty Images hide caption

Andrés Manuel López Obrador, a veteran leftist, is running for president once again. Polls put his lead well into the double digits ahead of his nearest rival. Mexico's election is July 1. Hector Vivas/Getty Images hide caption