It is easy to pin a crime on a dead guy. He cannot defend himself.
The question I have is this: how and why did the government ever give him a security clearance?
I had to take a battery of psychological tests in 1980 to get mine. Surely he had to have taken similar, if not the same, array of tests.
If he slipped through, how many others have done so, as well?
The psychological quizzes are only as good as the honesty of the responder. A psychopath would simply parrot back the “right” answers, cool as a cucumber.
Good golly, yes. When I got my Secret they interviewed my elementary school teachers! I will never understand the government mind...