Where have you been since 2020? The FDA did not conduct scientific review (that is, completed clinical trials) on any of the early Covid vaccines that killed and/or maimed hundreds of thousands of innocent victims.
If politics Vs science is going to get debated….. Do you recall under which Administration 'Operation Warp Speed' was initiated and Pfizer's vaccine was 'approved'?
On July 22, 2020, the U.S. government placed a conditional advance-purchase order of $2 billion with Pfizer to manufacture 100 million doses of a COVID-19 vaccine, with an option for 500 million more, for use in the United States if the vaccine was shown to be safe, effective, licensed, and authorized by the Food and Drug Administration (FDA).[57][61][62][63] On December 23, 2020, the Trump administration announced that they had ordered another 100 million doses from Pfizer.[64]