US diplomats are working to ensure the safety of deposed Honduran President Manuel Zelaya and his family as they press for restoration of constitutional law and his presidency.

President Barack Obama called Sunday for "all political and social actors in Honduras to respect democratic norms, the rule of law and the tenets of the Inter-American Democratic Charter" as the Central American crisis unfolded.

For those conditions to be met, Zelaya must be returned to power, US officials said.