This is a very serious discussion in Executive Session.
They are talking about Oswald being an agent. They already have evidence of it.
Where is the sarcasm? - Is he joking? - Does he mean something else?
At one point, Boggs:
"...I don't even like to see this being taken down." 
There is no sarcasm.
++++++++++++++++++++++++++++++++++
Dulles: Oh, terrible.
Boggs: Its implications of this are fantastic, don't you think so?
A: Terrific.
Rankin: To have anybody admit to it, even if it was the fact, I am sure that there wouldn't at this point
be anything to prove it.
Dulles: Lee, if this were true, why would it be particularly in their interest -- I could see, it would be
in their interest to get rid of this man but why would it be in their interest to say he is clearly the only guilty one?
I mean I don't see that argument that you raise particularly shows an interest.
Boggs: I can immediately --
A: They would like to have us fold up and quit.
Boggs: This closes the case, you see. Don't you see?
Dulles: Yes, I see that.
Rankin: They found the man. There is nothing more to do. The Commission supports their conclusions, and we can go
on home and that is the end of it.
Dulles: But that puts the man right on them. If he was not the killer and they employed him, they are already it, you see.
So your argument is correct if they are sure that this is going to close the case, but if it don't close the case, they are
worse off than ever by doing this.
Boggs: Yes, I would think so. And of course, we are all even grasping in the realm of speculation.
I don't even like to see this being taken down.
Dulles: Yes. I think this record ought to be destroyed. Do you think we need a record of this?
A: I don't, except that we said we would have records of meetings and so we called the reporter in the formal way.
If you think what we have said here should not be upon the record, we can have it done that way. Of course it might. . . .
Dulles: I am just thinking of sending around copies and so forth. The only copies of this record should be kept right here.
Boggs: I would hope that none of these records are circulated to anybody.
A: I would hope so too.