My understanding is that Grasso is not allowed to practice his craft as he is under a 2 year supervised release by the FBI.
NY Gaming doesn't do anything because of the loophole of him working on a private farm-Grasso committed a federal crime.
He is a registered Veterinarian -still-- because my understanding is that the system of veterinary Medicine hasn't logged his crimes.
If he is found to be practicing-he is in serious trouble from the Feds-because of the following====. The FBI New York Field Office: As the primary investigative agency on the 2020 racehorse doping ring, they accept tips on related ongoing illegal operations at (212) 384-1000 or online through tips.fbi.gov.
So if Petrelli or Campbell know something-thats who takes care of it.