On August 1, there was a change of the charge d’affaires of the U.S. Embassy in Havana. Leaving that position was Mara Tekach, a career member of the Senior Foreign Service. Her successor is Timothy Zuñiga-Brown, another career foreign service officer, who will have to deal with a reduced embassy staff and unsolved issues, such as the suspension of visa processing and the family reunification program. 
Here is an account of some of Tekach’s recent comments.
On her last day in this position, she delivered to the Cuban government a diplomatic note complaining about the state of human rights on the island. She said Cuba did not deserve a seat on the U.N. Human Rights Council in Geneva, Switzerland; instead it deserved censuring by that body. (On August 5, Secretary of State Michael Pompeo made the same plea, saying, “It’s outrageous that the Human Rights Council would offer to seat Cuba, a brutal dictatorship that traffic its own doctors under the guise of humanitarian missions. No country should vote Cuba onto the Council.”)
“While its leaders enjoy expensive yachts and watches, the Cuban people queue for hours to try to get food and medicine. Any country in the world can send supplies to the island, but they never reach the people,”
“The regime needs to democratize,” Tekach said. It is “fomenting destabilization abroad” and has established a “parasitic relationship built around all kinds of nefarious arrangements” with the Nicolás Maduro regime in Venezuela. “These things have to end.”
During her time in Havana, she was a vocal critic of the Cuban government. She visited political prisoners and dissidents and met with activists around the island. Tekach said “it was important to raise awareness on the island of the repression. And I was very focused on bringing this to the attention of the international community.” I was convinced “that the regime would not tolerate a single free thought among its people.”
Under her leadership, the embassy’s social media accounts engaged in campaigns to criticize the Cuban government’s medical missions and the country’s human-rights record. The government responded by showing on television images of her meeting with dissidents and accusing her of “recruiting mercenaries.”
For example, on July 4, 2020, she gave a speech at the Embassy dedicated to “all of the independent voices of Cuba – past and present. . . . May they never be silenced. May they continue to be heard. . . . Cuba’s countless independent voices dream and strive for a better future. You shall not be forgotten. We will continue to amplify your voices.”
And on July 21, 2020, she issued a statement on the Embassy’s website about Cuban medical missions that focused on the claims that the Cuban medical personnel are not paid fair compensation for their services on these missions. 
Tekach said the disagreements never stopped her from communicating with Cuban officials and working on issues like the repatriation flights organized after the coronavirus pandemic disrupted travel. But she noted that “it was not a friendly relationship.”
Tekach will remain influential in Cuban policy as the new coordinator of the State Department’s Office of Cuban Affairs.
 Torres, ‘It wasn’t a friendly relationship.’ Former top diplomat in Havana talks about U.S.-Cuba relations, Miami Herald (Aug. 5, 2020); ‘Do not be fooled by the Cuban regime,’ asks Mara Tekach when leaving office, Diario de Cuba (Aug. 7, 2020).
 U.S. Embassy (Cuba), Remarks by U.S. Embassy Chargé d’Affaires Mara Tekach (July 4, 2020); U.S. Embassy (Cuba), Statement from Chargé d’Affaires Mara Tekach The Truth about Cuban Medical Missions (July 21, 2020).
 State Dep’t, Secretary Michael R. Pompeo At a Press Availability (Aug. 5, 2020); Washington urges UN countries to deny Havana a seat on the Human rights Council, Diario de Cuba (Aug. 6, 2020).