An image of late Cuban President Fidel Castro hangs on the wall of a clinic amid concerns about the spread of the coronavirus disease (COVID-19), in Havana, Cuba, February 24, 2021. Picture taken on February 24, 2021. REUTERS/Alexandre Meneghini

A vintage car passes by a state building with a sign that reads in Spanish: "Homeland or Death - We shall prevail" in Havana, Cuba, February 19, 2021. REUTERS/Alexandre Meneghini

A Cuban flag waves inside a migrant encampment in Matamoros, Mexico February 18, 2021. Picture taken February 18, 2021. REUTERS/Daniel Becerril

Cuban migrants are detained by a U.S. Border Patrol agent as they turn themselves in to request asylum, after crossing into El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico February 5, 2021. REUTERS/Jose Luis Gonzalez

Cuban migrants talk to U.S. Customs and Border Protection (CBP) agents to request asylum in the U.S. at the Paso del Norte International border bridge, in Ciudad Juarez, Mexico January 21, 2021. REUTERS/Jose Luis Gonzalez

Cuban migrants stand near the Paso del Norte International border bridge after requesting asylum in the U.S., in Ciudad Juarez, Mexico January 21, 2021. REUTERS/Jose Luis Gonzalez

Cuban migrants talk to U.S. Customs and Border Protection (CBP) agents at the Paso del Norte International border bridge to request asylum in the U.S., in Ciudad Juarez, Mexico January 21, 2021. REUTERS/Jose Luis Gonzalez

Filip Medunic, a tourist from Germany and Sandra Alvarez are seeing reflected in the mirror of a vintage car after getting married in Havana, Cuba, January 6, 2021. REUTERS/Alexandre Meneghini

Filip Medunic, a tourist from Germany, chats with his fiancee Sandra Alvarez moments before getting married in Havana, Cuba, January 6, 2021. REUTERS/Alexandre Meneghini

Tourists from Germany take pictures at the Revolution Square in Havana, Cuba, January 5, 2021. Picture taken on January 5, 2021. REUTERS/Alexandre Meneghini

Tourists from Mexico and Canada walk in downtown Havana, Cuba, January 5, 2021. Picture taken on January 5, 2021. REUTERS/Alexandre Meneghini

Tourists from Russia, staying in a beach resort, walk in downtown during a day trip to Havana, Cuba, January 6, 2021. REUTERS/Alexandre Meneghini

Tourists from Russia, staying in a beach resort, walk in downtown during a day trip to Havana, Cuba, January 6, 2021. REUTERS/Alexandre Meneghini

Tourists ride in a vintage car at the seafront in Havana, Cuba, January 6, 2021. REUTERS/Alexandre Meneghini

A U.S. citizen pleads with U.S. Border Patrol agents to allow him to enter the country, as Cuban migrants block the Paso del Norte border crossing bridge, demanding they be allowed to cross and claim asylum in the the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge, demanding they be allowed to cross and claim asylum in the the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge, demanding they be allowed to cross and claim asylum in the the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge, demanding they be allowed to cross and claim asylum in the the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge, demanding they be allowed to cross and claim asylum in the the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge as they want to request asylum in the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge as they want to request asylum in the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants jump the turnstiles of the Paso del Norte border crossing bridge as they want to request asylum in the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge as they want to request asylum in the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge as they want to request asylum in the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge as they want to request asylum in the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants block the Paso del Norte border crossing bridge as they want to request asylum in the U.S., in Ciudad Juarez, Mexico December 29, 2020. Picture taken December 29, 2020. REUTERS/Jose Luis Gonzalez TPX IMAGES OF THE DAY

A view of Cuban and U.S. flags beside the U.S. Embassy in Havana, Cuba, December 15, 2020. REUTERS/Alexandre Meneghini

Cuban scientists speak during a news conference in Havana, Cuba, December 15, 2020. REUTERS/Alexandre Meneghini

A view of Cuban and U.S. flags beside the U.S. Embassy in Havana, Cuba, December 15, 2020. REUTERS/Alexandre Meneghini

A view of Cuban and U.S. flags beside the U.S. Embassy in Havana, Cuba, December 15, 2020. REUTERS/Alexandre Meneghini

Cuban migrants cook at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

A Cuban migrant lights a fire to cook at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

Cuban migrants are seen at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

Cuban migrants eat at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

Cuban migrants rest at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

A Cuban migrant gets a haircut at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

Cuban migrants play dominoes at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

Cuban migrants rest at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

A Cuban migrant carries a bucket with water at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

A Cuban migrant cooks at an encampment, set up by Cubans stranded at South Drain while awaiting the ferry service from Suriname to Guyana, as they try to reach the United States, in Nickerie, Suriname December 11, 2020. REUTERS/Ranu Abhelakh

An image of late Cuban President Fidel Castro hangs on a tree during celebrations of the Human Rights Day in Havana, Cuba, December 10, 2020. REUTERS/Alexandre Meneghini

Cuban artist Tania Bruguera (C) takes part in a gathering in front of the culture ministry to show solidarity with dissident artists and to demand a dialogue over limits on freedom of expression, in Havana, Cuba, November 27, 2020. REUTERS/Alexandre Meneghini

Cuban students living in Mexico and other demonstrators protest outside the Cuban Embassy in Mexico City, after Cuban authorities broke up a hunger strike against curbs on civil liberties in Havana by evicting the protesters from a house, in Mexico City, Mexico, November 27, 2020. REUTERS/Henry Romero

Cuban students living in Mexico and other demonstrators protest outside the Cuban Embassy in Mexico City, after Cuban authorities broke up a hunger strike against curbs on civil liberties in Havana by evicting the protesters from a house, in Mexico City, Mexico, November 27, 2020. The sign reads: "We are all San Isidro". REUTERS/Henry Romero

Cuban students living in Mexico and other demonstrators protest outside the Cuban Embassy in Mexico City, after Cuban authorities broke up a hunger strike against curbs on civil liberties in Havana by evicting the protesters from a house, in Mexico City, Mexico, November 27, 2020. REUTERS/Henry Romero

Cuban students living in Mexico and other demonstrators protest outside the Cuban Embassy in Mexico City, after Cuban authorities broke up a hunger strike against curbs on civil liberties in Havana by evicting the protesters from a house, in Mexico City, Mexico, November 27, 2020. REUTERS/Henry Romero

Cuban students living in Mexico and other demonstrators protest outside the Cuban Embassy in Mexico City, after Cuban authorities broke up a hunger strike against curbs on civil liberties in Havana by evicting the protesters from a house, in Mexico City, Mexico, November 27, 2020. REUTERS/Henry Romero

Cuban students living in Mexico and other demonstrators protest outside the Cuban Embassy in Mexico City, after Cuban authorities broke up a hunger strike against curbs on civil liberties in Havana by evicting the protesters from a house, in Mexico City, Mexico, November 27, 2020. REUTERS/Henry Romero

Cuban students living in Mexico and other demonstrators protest outside the Cuban Embassy in Mexico City, after Cuban authorities broke up a hunger strike against curbs on civil liberties in Havana by evicting the protesters from a house, in Mexico City, Mexico, November 27, 2020. REUTERS/Henry Romero

Soyala Gonzalez watches images of late Cuban President Fidel Castro on TV during commemorations on the fourth anniversary of his death, in Havana, Cuba, November 25, 2020. REUTERS/Alexandre Meneghini

A barman chats with a colleague at a state-owned restaurant in Havana, Cuba, November 16, 2020. Photo taken on November 16, 2020. REUTERS/Alexandre Meneghini

Cuban migrants are seen near the Paso del Norte international border bridge after being deported from the United States, in Ciudad Juarez, Mexico November 2, 2020. Picture taken November 2, 2020. REUTERS/Jose Luis Gonzalez

Norma Hernandez poses for a photo at her bed and breakfast in Havana, Cuba, November 6, 2020. Picture taken November 6, 2020. REUTERS/Alexandre Meneghini

Diamela Esperanza wears a head scarf with the colors of the U.S. flag as she has her nails painted in Havana, Cuba, November 7, 2020. REUTERS/Alexandre Meneghini

Cuban migrants, under the "Remain in Mexico" program, react after the media announced that U.S. Democratic presidential candidate Joe Biden won the 2020 U.S. presidential elections in Ciudad Juarez, Mexico November 7, 2020 REUTERS/Jose Luis Gonzalez

A cuban migrant, under the "Remain in Mexico" program, watches television at her home after media announced that Democratic U.S. presidential nominee Joe Biden has won the 2020 U.S. presidential election in Ciudad Juarez, Mexico November 7, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants, under the "Remain in Mexico" program, react after the media announced that US Democratic presidential candidate Joe Biden won the 2020 U.S. presidential elections in Ciudad Juarez, Mexico November 7, 2020 REUTERS/Jose Luis Gonzalez

A cuban migrant, under the "Remain in Mexico" program, wearing face mask reacts after media announced that Democratic U.S. presidential nominee Joe Biden has won the 2020 U.S. presidential election in Ciudad Juarez, Mexico November 7, 2020. REUTERS/Jose Luis Gonzalez

A Cuban migrants, under the "Remain in Mexico" program, reacts after media announced that Democratic U.S. presidential nominee Joe Biden has won the 2020 U.S. presidential election in Ciudad Juarez, Mexico November 7, 2020. REUTERS/Jose Luis Gonzalez

Cuban migrants, under the "Remain in Mexico" program, celebrate after media announced that Democratic U.S. presidential nominee Joe Biden has won the 2020 U.S. presidential election in Ciudad Juarez, Mexico November 7, 2020. REUTERS/Jose Luis Gonzalez