Speaking before a supportive crowd of Cuban-Americans in Miami, Trump said he was rolling back Obama- era ties because it led to too many US travelers and businesses delivering cash right into the hands of the Cuban government.
"A year and a half ago a president, an American president landed in Havana to outstretch his hand to a regime", Rubio said before Trump took the stage at a rally in Florida.
Obama announced in December 2014 that he and Cuban leader Raul Castro were restoring diplomatic ties between their countries, arguing that a new approach was needed because the policy the USA had pursued for decades had failed to democratize the island.
The policy changes partially fulfilled a campaign promise by Trump and aligned him with hawkish Cuban-American Republicans in the US Congress.
President Trump went on to say that the harboring of Americas criminals "will end...it will end, you will have no choice".
Trump said his actions bypassed the military and the government to help the Cuban people form businesses and pursue much better lives.
The new policy changes direct the Treasury Department and the Commerce Department to begin the process of issuing new regulations within 30 days.
Christopher Sabatini, professor at Columbia University's School of worldwide and Public Affairs, argued that Trump's policy could actually perpetuate Cuba's isolation and social stasis.
Our new policy begins with strictly enforcing United States law. Nearly 300,000 Americans visited Cuba through the end of May this year, according to the island's National Office of Statistics.
Protesters greeted Trump, who was making his first trip to Miami since becoming president, to two continuous hours of the Beatles' "Back in the USSR" on a speaker.
The ban on tourism will be upheld until that time and American companies will be barred from engaging in financial transitions with Cuba's military-operated businesses.
Tourism travel will further be restricted to include only group travel for all non-academic visits. The policy angered both Cuban-Americans and human rights advocates, noting that such people will likely to subjected to savage punishment when they are returned.style="text-align: center;"