A member of the National Anti-Kidnapping Coordination stands guard outside the Forensic Medical Service morgue building ahead of the transfer of the bodies of two of four Americans kidnapped by gunmen to the U.S. border, in Matamoros, Mexico, March 8, 2023. REUTERS/Daniel Becerril 

Members of the National Anti-Kidnapping Coordination arrive at the Forensic Medical Service morgue building ahead of the transfer of the bodies of two of four Americans kidnapped by gunmen to the U.S. border, in Matamoros, Mexico, March 8, 2023. REUTERS/Daniel Becerril 

A member of the National Anti-Kidnapping Coordination arrives at the Forensic Medical Service morgue building ahead of the transfer of the bodies of two of four Americans kidnapped by gunmen to the U.S. border, in Matamoros, Mexico, March 8, 2023. REUTERS/Daniel Becerril 

A member of the National Anti-Kidnapping Coordination stands guard outside the Forensic Medical Service morgue building ahead of the transfer of the bodies of two of four Americans kidnapped by gunmen to the U.S. border, in Matamoros, Mexico, March 8, 2023. REUTERS/Daniel Becerril 

A member of the National Anti-Kidnapping Coordination arrives at the Forensic Medical Service morgue building ahead of the transfer of the bodies of two of four Americans kidnapped by gunmen to the U.S. border, in Matamoros, Mexico, March 8, 2023. REUTERS/Daniel Becerril 

Mexican Foreign Secretary Marcelo Ebrard salutes Aurelio Carbonell, member of the National Liberation Army (ELN) rebel group as they attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard salutes Otty Patino, head of the negotiation team of the Colombian Government, near Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) and ELN member Aureliano Carbonell as they attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard shakes hands with Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) as they attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard shakes hands with Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) as they attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) and Aureliano Carbonell, ELN negotiator, attend a cycle of peace dialogues with negotiators from Colombia's government, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Otty Patino, head of the negotiation team of the Colombian Government speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Otty Patino, head of the negotiation team of the Colombian Government speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard, Otty Patino, head of the negotiation team of the Colombian Government, Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) Aureliano Carbonell, ELN negotiator, pose for a group photo, as they attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Mexican Foreign Secretary Marcelo Ebrard, Otty Patino, head of the negotiation team of the Colombian Government, Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) Aureliano Carbonell, ELN negotiator, pose for a group photo, as they attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) speaks, as negotiators from Colombia's government and members of the National Liberation Army (ELN) rebel group attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Otty Patino, head of the negotiation team of the Colombian Government and Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Otty Patino, head of the negotiation team of the Colombian Government and Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Otty Patino, head of the negotiation team of the Colombian Government and Pablo Beltran, head of leftist guerrilla group National Liberation Army (ELN) attend a cycle of peace dialogues, during the Inter-American Conference on Social Security (CISS) in Mexico City, Mexico February 13, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau looks on during the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau, Mexican President Andres Manuel Lopez, Mexican Foreign Secretary Marcelo Ebrard, and Canadian Foreign Minister Melanie Joly attend the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau, Mexican President Andres Manuel Lopez, Mexican Foreign Secretary Marcelo Ebrard, and Canadian Foreign Minister Melanie Joly attend the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau, Mexican President Andres Manuel Lopez, Mexican Foreign Secretary Marcelo Ebrard, and Canadian Foreign Minister Melanie Joly attend the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau, Mexican President Andres Manuel Lopez, Mexican Foreign Secretary Marcelo Ebrard, and Canadian Foreign Minister Melanie Joly attend the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez attend the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez walk during the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez shake hands during the signing of a memorandum of Understanding between the Instituto Nacional de Pueblos Indigenas (INPI) and Crown-Indigenous Relations and Northern Affair Canada (CIRNAC) at the National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Mexican President Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller, Canada's Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Mexican President Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller, Canada's Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Mexican President Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller, Canada's Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Mexican President Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller, Canada's Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Mexican President Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller, Canada's Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Mexican President Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller, Canada's Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Mexican President Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller, Canada's Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador greet as they attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador greet as they attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

The wife of Mexican President Andres Manuel Lopez Obrador, Beatriz Gutierrez Muller, and the wife of Canada's Prime Minister Justin Trudeau, Sophie Gregoire Trudeau, attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador greet as they attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

Canada's Prime Minister Justin Trudeau and Mexican President Andres Manuel Lopez Obrador greet as they attend an official welcoming ceremony during the North American Leader's Summit at National Palace in Mexico City, Mexico January 11, 2023. REUTERS/Raquel Cunha 

A pro-migration demonstrator hold a sign reading: "Migration is a Human Right" as the motorcade of U.S. President Joe Biden and Canada's Prime Minister Justin Trudeau (not pictured) pass toward the National Palace for the North American Leader's Summit, during a protest in Mexico City, Mexico, January 10, 2023 REUTERS/Quetzalli Nicte Ha 

Pro-migration demonstrators yell as the motorcade of U.S. President Joe Biden and Canada's Prime Minister Justin Trudeau (not pictured) pass toward the National Palace for the North American Leader's Summit, during a protest in Mexico City, Mexico, January 10, 2023 REUTERS/Quetzalli Nicte Ha 

Pro-migration demonstrators hold up signs as the motorcade of U.S. President Joe Biden and Canada's Prime Minister Justin Trudeau (not pictured) pass toward the National Palace for the North American Leader's Summit, during a protest in Mexico City, Mexico, January 10, 2023 REUTERS/Quetzalli Nicte Ha 

Pro-migration demonstrators yell as the motorcade of U.S. President Joe Biden and Canada's Prime Minister Justin Trudeau (not pictured) pass toward the National Palace for the North American Leader's Summit, during a protest in Mexico City, Mexico, January 10, 2023 REUTERS/Quetzalli Nicte Ha 

Pro-migration demonstrator yells as the motorcade of U.S. President Joe Biden and Canada's Prime Minister Justin Trudeau (not pictured) pass toward the National Palace for the North American Leader's Summit, during a protest in Mexico City, Mexico, January 10, 2023 REUTERS/Quetzalli Nicte Ha 

Pro-migration demonstrators yell as the motorcade of U.S. President Joe Biden and Canada's Prime Minister Justin Trudeau (not pictured) pass toward the National Palace for the North American Leader's Summit, during a protest in Mexico City, Mexico, January 10, 2023 REUTERS/Quetzalli Nicte Ha 

Pro-migration demonstrators hold up signs as the motorcade of U.S. President Joe Biden and Canada's Prime Minister Justin Trudeau (not pictured) pass toward the National Palace for the North American Leader's Summit, during a protest in Mexico City, Mexico, January 10, 2023 REUTERS/Quetzalli Nicte Ha 

Mexican president Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller walk at the National Palace in Mexico City, Mexico January 10, 2023. REUTERS/Henry Romero 

U.S. President Joe Biden meets his Mexican counterpart Andres Manuel Lopez Obrador at North American Leader's Summit, at the National Palace in Mexico City, Mexico January 10, 2023. REUTERS/Henry Romero 

Mexican president Andres Manuel Lopez Obrador and his wife Beatriz Gutierrez Muller walk at the National Palace in Mexico City, Mexico January 10, 2023. REUTERS/Henry Romero