Because while I would like to believe the Democrats will never be in power again (because we will resemble Venezuala in short order) they probably will be someday... bureaucrats have to take Senators seriously, and even in the minority the Democrats can influence the budget.
The FDA bureaucrats would certainly care more about what 5 senators say then a bathroom installer, a disgraced ex doctor and a doctor who is a paid shill for Astrazeneca (they care somewhat about the Astrazeneca job because some of them hope to get a sinecure VP job with Astrazeneca).
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