An American diplomat involved in an effort by the Trump administration to prevent the introduction of a breast-feeding resolution at a global health conference this spring denied making threats to Ecuador, the country that initially sponsored the resolution.

In an interview, Todd C. Chapman, the United States ambassador to Ecuador, said that allegations reported by The New York Times on July 8 that he threatened Ecuadorean officials with trade sanctions and withdrawal of some military assistance were “patently false and inaccurate.”

The article, based on interviews with three Ecuadorean officials who declined to be named for fear of losing their jobs, said that Mr. Chapman had made such threats in an effort to get the country to drop the resolution. Before publication of the article, the United States embassy in Quito declined two requests from the Times to make Mr. Chapman available for an interview. The State Department had also declined to comment, saying it could not discuss private diplomatic conversations.

In his recent interview with the Times, Mr. Chapman said he was asked by the Department of Health and Human Services, the agency leading the negotiations at the World Health Assembly in Geneva, to meet with officials in Ecuador to raise concerns that H.H.S. had about the timing and substance of the resolution that Ecuador wanted to introduce. He said that during his meetings, with the Ecuadorean minister of health and the acting minister of foreign affairs, there was no mention of trade sanctions or military assistance.