I know he’s a Harvard/Yale attorney, but he doesn’t seem to understand how a state grand jury operates.
A grand jury doesn’t ad has no power to INVESTIGATE anything.
That is the job of PROSECUTORS.
Evidence, discovered during an investigation, is presented to a Grand Jury. Their job is to consider the evidence.
Once again: A Grand Jury has no investigative function.
NUMEROUS investigations have already been done, and mountains of evidence has been thoroughly documented that PROVE the malfeasance of THE DEEP STATE CONTROLLED CDC.
As you say "Evidence, discovered during an investigation, is presented to a Grand Jury. Their job is to consider the evidence."
That is exactly what DeSantis has petitiond for.
https://www.flgov.com/wp-content/uploads/2022/12/Vaccine-Grand-Jury-Petition.pdf
You might want to familiarize yourself with Florida law concerning statewide grand juries.