Trump was meeting with Cuban-American community leaders Monday while visiting Miami. He also planned to tour the Bay of Pigs Veteran's Library and Museum.
Trump hasn't said whether he's competing for the Reform Party nomination, but he is seeking attention and credibility for a potential presidential campaign.
In a Nov. 5 letter to Rep. Ileana Ros-Lehtinen, a Republican from Florida, Trump wrote that the nature of his trip to Miami was not political but rather to "focus on the issue of the Cuban embargo and the Cuban people's continuing fight for freedom."
Trump recently condemned Cuban President Fidel Castro, saying the dictator is "absolutely a killer and should be treated as such."
He also denounced Castro in an editorial published in The Miami Herald June 25.
"The real cause of misery of the Cuban people is Castro's Marxist-Leninist economic system - not the U.S. embargo," Trump wrote. "Castro's Cuba is a brutal police state; Castro rules through terror, intimidation and brutality."
The economic embargo, which has banned U.S. firms from doing business in Cuba since the early 1960s, has strong support among South Florida's Cuban-American community.
"This is someone who will be heard," said Ninoska Perez, spokeswoman for the Cuban American National Foundation, an anti-Castro group in Miami. "We feel that every time someone raises the issue of Cuba it brings that issue to a national level."
A recent New York Daily News/WNBC-TV poll indicated that 74 percent of Trump's fellow New Yorkers felt he was running simply "to promote himself."
Some Miami residents agree.
"He's just a billionaire," said Michael Morales, 18. "I don't see what he can do for our political system."
Forbes magazine has estimated Trump's fortune at $1.6 billion. Trump, two years ago, said his wealth was worth about $3.7 billion.
Some said they think that Trump's financial success is enough to make him a serious contender for the presidency.
"I think Donald Trump is a business savvy person," said 22-year-old Vicente Lago. "He could probably run our country well financial wise. But I don't know how he would handle being a president day in and day out. You can't party at night any more as much as he does."
Reported By Rachel La Corte