I see no indication that the HSCA did not see what it wanted to see.
Fred, I am very surprised to see you say such a thing, given what we now know about the materials and information that the CIA withheld from the HSCA. As just one example, do you think Lopez and Hardway are lying about being denied access to documents/information they wanted to see? Do you think Fonzi was lying about this? Surely you've read Blakey's 2014 statement about the CIA's obstruction of the HSCA's investigation.
As you know, I am no leftist critic of the CIA. I usually defend the CIA against the outlandish, draconian attacks made against it by liberal JFKA researchers. I believe the CIA has done a great deal of good for America and for the cause of freedom. But, the CIA did have some very bad apples, and some of them held high positions.