(NewsNation) — Fired Centers for Disease Control and Prevention director Susan Monarez is expected to tell senators that she was fired for refusing to approve new vaccine recommendations without reviewing scientific evidence.

According to a copy of the prepared remarks, obtained Tuesday by the Associated Press, Monarez will tell senators that Health Secretary Robert F. Kennedy Jr. gave her an ultimatum: “Preapprove” new vaccine recommendations from a controversial advisory CDC panel that Kennedy has stocked with some medical experts who doubt vaccine safety or be fired. That panel is expected to vote on new vaccine recommendations later this week.

Monarez was fired just weeks into her role, which she says is because she refused to rubber-stamp vaccine recommendations without reviewing th

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