makes him and the WC members an accessory after the fact to the murder of the POTUS. Much more serious than the Nixon issue. That being said, Nixon got what he deserved. I have zero sympathy for him. The similarity is that the tapes convicted both of them, but LBJ was dead by then. Not saying LBJ killed him. I am saying that the tapes proved that LBJ and the WC were covering up the truth about who did. Which makes them all accessories after the fact.
So, this is a much bigger issue than the cover up of a break in.
As a sidebar, Nixon was never impeached. He resigned.