On Saturday, US Secretary of State Marco Rubio described Cuba as a “disaster” run by “incompetent, senile men”.
“If I lived in Havana, and I was in the government, I’d be concerned – at least a little bit,” Rubio said.
In July last year, Trump signed a memorandum imposing tighter restrictions on Cuba, reversing moves by his predecessor Joe Biden easing pressure on the Caribbean island nation.
The White House said it would end “economic practices that disproportionately benefit the Cuban government, military, intelligence, or security agencies at the expense of the Cuban people”.
It also said existing restrictions on Americans visiting Cuba would be more stringently enforced.
During his first term as president, Trump took a similar approach to Cuba, implementing a raft of additional sanctions.
His administration has continued an economic embargo on Cuba, despite calls by international organisations including the United Nations to end it.
The blockade was initially imposed in 1962 and has been in place ever since.