It's important to remember that less than 48 hours after the assassination Hoover had determined the outcome of the investigation.
The FBI were to find that Oswald was the sole assassin. No confederates. No accomplice.
"If the president had to have this commission, its function should be to receive the FBI’s report, review it, ask questions aimed at clarifying its findings, then endorse the report and disband."
Less than 48 hours after the assassination Hoover had determined the outcome of the FBI's report, that Oswald was the lone assassin. The Warren Commission was to view this report, ask questions to clarify it's findings, then endorse the report.
That is exactly what the Warren Commission did.
The result of the Commission had been determined before the Commission had even come into being.
And it is in this light that any FBI involvement in the investigation of JFK's assassination must be viewed.
This includes something as seemingly pointless as Bledsoe and the shirt.
Viewed through this lens it becomes obvious that the FBI visited Bledsoe to make sure she 'remembered' Oswald wearing the shirt that they already had fibre evidence for.
But it wasn't the shirt Oswald wore to work that day which demonstrates the FBI fibre evidence was as suspect as Bledsoe's memory and that it was all part of the charade to achieve the outcome of the investigation that Hoover had already determined.
This doesn't mean Oswald didn't do it.
It just means to take the FBI's report (and therefore the findings of the Warren Commission) with a pinch of salt.
The FBI were to find that Oswald was the sole assassin.
The FBI had experience with thousands of cases and certain patterns emerge, if there was probative evidence to suggest otherwise then perhaps that would sway the FBI, but look at what they had;
1) Oswald did the murder with a $13 dollar mail order rifle, an organised hit would use a cheap ass rifle? BTW Oswald's Carcano was tested and found to very capable.
2) Oswald didn't have anyone waiting to get him the hell out of there.
3) Oswald did his best impersonation of running around like a chicken without a head, in his pursuit of escape.
4) Oswald wasn't even organised enough to take his revolver but had to stop off at his room to collect it.
5) Oswald's final best bet wasn't to go to some preorganized safe house but to hide in a darkened theatre? LOL!
JohnM