Florida Gov. Ron DeSantis, a major supporter of monoclonal antibody treatments for COVID-19, is going to war with the Biden administration over the Food and Drug Administration’s revocation of authorization for two antibody cocktails found to be ineffective against the omicron variant.

DeSantis, a Republican who has gained support from conservatives for his opposition to pandemic restrictions and mandates, is arguing that COVID-19 patients should be able to decide for themselves whether to take the two brands of antibodies in question and that the FDA’s decision was based on lab results rather than clinical data.