HAVANA: A "very healthy, very energetic" Fidel Castro asked visiting Congressional Black Caucus members what Cuba could do to help President Barack Obama improve bilateral relations during his first meeting with US officials since falling ill in 2006.

Caucus leader Representative Barbara Lee, a Democrat from California, said the ailing former Cuban president talked for nearly two hours with her and two other delegation members on Tuesday in a meeting seen as signaling Cuba's willingness to discuss better relations with the United States.

"We believe it is time to open dialogue and discussion with Cuba," Lee told a news conference in Washington upon the caucus members' return. "Cubans do want dialogue. They do want talks. They do want normal relations."