FILE - Mexican leftist opposition presidential candidate Cuauhtemoc Cardenas, right, greets supporters with leftist Mexico City mayoral candidate Andres Manuel Lopez Obrador during a campaign rally in Mexico City's Zocalo plaza, June 25, 2000. (AP Photo/John Moore, File)

FILE - Cuauhtemoc Cardenas, center, a founder of the Party of the Democratic Revolution, PRD, leaves the Monument of the Revolution where he presented his party's energy reform proposal in Mexico City, Aug. 19, 2013. (AP Photo/Eduardo Verdugo, File)

FILE - Cuauhtemoc Cardenas, son of the politician who nationalized the Mexican oil industry and founder of the Democratic Revolution Party, speaks during an interview in Mexico City, July 24, 2013. (AP Photo/Marco Ugarte, File)

High-speed trains are photographed on their platforms at Madrid's Atocha station, Spain, Thursday, Oct. 29, 2026. (AP Photo/Bernat Armangue)

People observe a minute of silence in memory of the victims of a train collision at Atocha railway station in Madrid, Spain, Thursday, Oct. 29, 2026. (AP Photo/Bernat Armangue)

Iryo employees react after observing a minute of silence for the victims of a train collision at Atocha railway station in Madrid, Spain, Thursday, Oct. 29, 2026. (AP Photo/Bernat Armangue)

People searching for relatives who were traveling on the trains involved in a collision gather at a religious residence converted into a temporary medical facility in Toledo, Spain, Thursday, Oct. 29, 2026. (AP Photo/Andrea Comas)

A security person redirects traffic away from a hotel where the Communist Party's Central Committee holds its fifth plenum in Beijing, Thursday, Oct. 29, 2026. (AP Photo/Ng Han Guan)