The United States has still not responded to Cuba's offer of 1,600 doctors to help victims of Hurricane Katrina.
The response "has yet to arrive, and may never come," said a front-page government statement in Granma, the ruling Communist Party daily.
Cuba has for decades invested heavily in training doctors, sending them to allied African and Latin American nations. Since the storm, Cuban president Fidel Castro has repeatedly offered doctors to aid Katrina relief operations.
The US State Department said last week the Cuban offer was not needed because enough American doctors had offered their services, but added that all options would be considered.
Washington has branded Cuba one of the world's few remaining "outposts of tyranny" in a league with Myanmar, Belarus and Zimbabwe. A US trade embargo on the communist island has been in place for more than four decades, and during that time the countries have not had diplomatic relations.