One might think that now that Fauci has been pardoned, he is safe from prosecution. That just might not be true. The pardon has no affect outside the US.
You take, for instance Italy that was hit particularly hard. Those in Italy might be anxious to get that mass murderer in a courtroom.
If he is wise Fauci might think 2 or 4 times about where he decides to go on vacation. There might be a place or two that took his “experimenting” very seriously. They might even suggest that he visit for a while. They might even promise him a greeting committee.