From the Korea Biomedical Review, consisting of some of Korea's top doctors and experts and who described chloroquine as "an accepted treatment": "Data from the drug’s [chloroquine] studies showed ‘certain curative effect’ with ‘fairly good efficacy’ … patients treated with chloroquine demonstrated a better drop in fever, improvement of lung CT images, and required a shorter time to recover compared to parallel groups." Stanford University School of Medicine recognized this, as well.
Fauci specifically said no "studies" have been done, when that isn't true.