Because we don’t deserve to know the truth.
Hey “Intelligence Committee”, how’s about you demand a copy of the Ambassador’s autopsy report and let us know what it said.
Tell us exactly what they did to the Ambassador before he died.
Then tell us why the Administration covered it up and you all think that’s okay.
Classified in order to protect the Administration from the embarrassment of having the spotlight on the fact that their incompetence had bloody consequences.