Florida senator and GOP presidential candidate Marco Rubio filed a senate bill on Tuesday that will remove special benefits from Cuban Immigrants in the U.S. The Cuban Immigrant Work Opportunity Act of 2016‎ aims to change years of practice where Cubans collect their benefits in the U.S. then going back to the Cuba.

"It is outrageous whenever the American people's generosity is exploited. It is particularly outrageous when individuals who claim to be fleeing repression in Cuba are welcomed and allowed to collect federal assistance based on their plight, only to return often to the very place they claimed to be fleeing," Rubio said in a press release.

The 44-year-old Florida senator is a son of Cuban immigrants that arrived in the U.S. three years before Fidel Castro rose to power in 1959. Rubio is one of the three Latino Americans in the U.S. Senate and has used his heritage as part of his campaign.

The bill will require the immigrants to prove that they have been persecuted in Cuba to qualify for the Refugee Resettlement Program that gives cash, food stamps and Medicaid to asylum seekers. It also ensures that these benefits are not collected by people living outside the U.S.

A similar bill was filed by Rep. Carlos Curbelo last month that have already gathered support from Cuban Americans in Congress and other lawmakers. The new legislations came six months after diplomatic ties between the U.S. and Cuba were restored after 54 years on hostility.

"This legislation will ensure that only persecuted Cubans can receive refugee benefits, which are designated for those who cannot return to their countries, and will protect American taxpayers. America's generosity should be honored and appreciated, never exploited or abused," Curbelo said via Sun Sentinel.

However, the report noted that the bill does not affect the Cuban Adjustment Act of 1966 that allows Cubans to have U.S. residency after one year and one day in American soil. That law was made for Cubans to escape communism, but many took it as an advantage to freely move between U.S. and Cuba.

The Sun Sentinel also uncovered that Cubans cost U.S. taxpayers more than $680 million per year while fraud and theft have cost $2 billion in the past 20 years. The number of Cuban immigrants has increased in the past few months because many of its people are worried that better relations between the two nations will end the benefits they are getting, per CNN.

About 8,000 Cuban immigrants were stranded in Costa Rica last December trying to reach the U.S. A deal between five other Central American countries and Mexico were signed last week. The agreement will fly the 8,000 stranded Cubans to El Salvador and then travel by bus to reach the U.S. border.