That's assuming someone hasn't already gone and taken out whatever proof there was from his island. There have been drone footage taken by people showing how things were taken from his mansion.
I wouldn't trust it as proof, I'm just saying, there wasn't anything stopping people from taking away incriminating evidence before the FBI had a chance to get a warrant.
https://www.redstate.com/brandon_morse/2019/08/13/computer-r...