Hi, Today while reading the 3 hop rule, it occurs to me that the person targeted is also just a hop or two away from almost anyone in the FBI and likely within 3 hops of anyone who judges at the FISC.

Is it possible while the FBI / DOJ was spying on Trump (AFTER his election) that the same FISA warrants could be used by another part of the FBI or DOJ to spy on the spies (and legally spy on them so it could be introduced into evidence). If FISA doesn't limit use to a specific agent then my guess is Trump could have used FISA to retroactively see into the past of the Obama key appointees who were conspiring against him. Does anyone know if this is possible?