Same reason he disappeared the Black Boxes at Ground Zero.

He has no interest in finding the truth, but has great incentive to bury it.

Because the Clinton's would have executed his ass.

Mueller did not want to commit suicide by shooting himself in the back of the head twice.

Mueller is a total scumbag pawn who was trapped between lethal forces on all sides, trying to find some impossible way out of it with his own skin still intact. The fact that he is even still alive suggests he might have succeeded. That remains to be seen.

Because Seth did not respond to the subpoena.

Because that's just a conspiracy there goy, not real.

Because he was hanging out in Antarctica, with all the other major countries that are pretending to be our enemies in order to bring about a manufactured War.

The actual questions even in Trump Era are taken care of. Either Trump gets the bullet to or the Swamp gets to be corrupt.

Because they all know...

Because Clinton did it.