Under the U.S. Cuban Adjustment Act of 1996, Cuban migrants can take advantage of the so-called "wet-foot, dry-foot" policy, which dictates that those who set foot on U.S. soil can stay, while those captured at sea are sent back.
Since late 2015, countries in Central America have seen a surge in the number of Cubans entering. As the U.S.-Cuba relations began to thaw, many Cubans believe their preferential treatment is ending soon and it's their last chance to go to America and obtain a green card quickly.
Above, Cuban migrants wait to receive humanitarian visas at a border post with Panama in Paso Canoas, Costa Rica on Nov. 14, 2015.
Nicaraguan riot police stand behind a Costa Rican police officer at a border post with Nicaragua in Penas Blancas, Costa Rica on Nov. 16, 2015. On the day before Nicaragua closed its border with Costa Rica to hundreds of Cubans who were heading for the United States, stoking diplomatic tensions over a growing wave of migrants making the journey north from the Communist-ruled country.
A Cuban migrant shows her toes decorated with the flags of Cuba, left, and the United States at a temporary shelter in La Cruz, Costa Rica, near the border with Nicaragua, on Nov. 17, 2015.
27,296 Cubans entered the United States in the first nine months of the 2015 fiscal year, a 78 percent increase from 2014, Reuters reported.
A Cuban migrant cuts the hair of a fellow migrant at the border between Costa Rica and Nicaragua in Penas Blancas, Costa Rica on Nov. 17, 2015.
Cuban migrant Lenin Rivacoba stands at the border between Costa Rica and Nicaragua, Penas Blancas on Nov. 18, 2015. He was briefly blinded by tear gas, lost hearing in one ear and is now almost out of money. But Rivacoba, whose first name was given in honor of Soviet revolutionary Vladimir Lenin, says he would rather perish than return to his family in Cuba because it would mean giving up on the dream of a new life in the United States.
Cuban migrants use their cell phones in a bathroom at the border between Costa Rica and Nicaragua in Penas Blancas, on Nov. 18, 2015. Costa Rican Foreign Minister Manuel Gonzalez had proposed a "humanitarian corridor" for Cuban migrants transiting Central America on their way to the United States.
Cuban migrant Sylenay Valle holds her 10-month-old baby Yeryko at a shelter in Liberia, Costa Rica on Nov. 26, 2015.
The migrants include all kinds of people - from babies to grandparents, blacks to whites.
Cuban migrants have breakfast at a shelter in Liberia on Nov. 26, 2015.
Cubans migrants chat at the end of the day in La Cruz, Costa Rica, on Nov. 27, 2015.
Marisol Rosales, 63, struggles to come down a hill after she crossed the border with fellow Cuban migrants from Colombia into La Miel, Panama, on Nov. 26, 2015.
Cuban migrants help a child as they walk down crossing the border from Colombia through the jungle into La Miel, in Guna Yala, Panama, on Dec. 1, 2015.
A Cuban migrant freshens up in the sea upon arrival in La Miel through the jungle, in Guna Yala, Panama on Nov. 30, 2015.
A Cuban migrant shouts "Cuba" upon arriving at the beach after crossing the border from Colombia through the jungle as tourists stand by in La Miel, Panama on Dec. 2, 2015. At the time local authorities in La Miel said some 100 to 150 Cubans had been entering Panama from Colombia every day for since September, 2015.
Cuban migrants rest at a temporary shelter at the border between Costa Rica and Nicaragua in Penas Blancas on Dec. 24, 2015.
A Cuban migrant removes an inflatable mattress at a makeshift camp at a border post with Panama in Paso Canoas, Costa Rica on Dec. 23, 2015.
Cubans prepare pigs for Christmas eve dinner at a temporary shelter in La Cruz, on Dec. 24, 2015.
Cuban migrants line up while waiting outside a Western Union in La Cruz on Jan. 11, 2016.
Cuban migrant Ivan Tamayo, left, shows his compatriot Dany Cejas a document which will allow migrants to continue their journey to the Guatemala-Mexico border, at a shelter in La Cruz on Jan. 11, 2016. About 180 Cubans left Costa Rica at night on Jan. 12, 2016.
Read more on Reuters.