White House officials say President Barack Obama will visit Cuba next month, a major, symbolic step in the warming of ties between the two Cold War enemies.

The Obama administration will formally announce the trip Thursday, according to a senior administration official, who said the visit will be a part of the president’s travels to Latin America.

CNN reported the visit is planned for March 21-22, before the president flies to Argentina.

The trip had long been expected as part of Obama’s effort to make as much progress as possible in improving ties with Cuba before he leaves office in January, 2017.

Late last year Obama said he would like to visit Cuba by the end of 2016, but only if the Communist-led country makes enough human rights reforms and he can meet with political dissidents.

No comment from Havana

Cuban officials have not commented on the reported Obama visit. After the president’s comments in December, Havana said they welcome Obama, but warned him against meddling in the country’s internal affairs.

Neither Cuban nor U.S. officials have said whether the apparent disagreement has since been resolved.

Obama and Cuban President Raul Castro in December 2014 announced the nations were restoring formal diplomatic relations that were severed shortly after communist leader Fidel Castro overthrew the island’s longtime dictator in 1959. 

The U.S. eased travel restrictions to the Caribbean island in September. On Tuesday, the U.S. and Cuban officials signed a deal restoring commercial air traffic. But general tourism is banned by the U.S. trade embargo, which can only be lifted by Congress.

Obama will be the first sitting U.S. president to visit Cuba since President Calvin Coolidge went to Havana in 1928.

Watch: President Obama Announces Reestablishment of US-Cuba Relations
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