evidence: Some officials worked to justify the president’s decision to take hydroxychloroquine, while other aides debated whether they needed to update government guidelines about the drug. [...] On Tuesday, Trump even dismissed one downbeat study about hydroxychloroquine as a "Trump enemy statement." The study, partially funded by the government and released in April, found hydroxychloroquine provided no benefit and led to a potentially higher risk of death for coronavirus patients at U.S. veterans hospitals. The research has not been peer reviewed and was not a clinical trial. [...] There’s no conclusive evidence that hydroxychloroquine is more effective in healthier patients, however.