My issue is that he was curiously incurious about all this back during the primaries when he and several others were like the cat that ate the canary, could barely restrain themselves they were so cocksure and smug that Trump would never win, they knew then including Graham. He was perfectly content to hang Trump with it at the time. Pardon me for being less than impressed that he’s decided to try to run out in front of the parade now that the worm has apparently turned.
That may be true, I also think that Graham’s conservations with Trump once he got elected also got caught up in the FISA warrants, and his name was not redacted. But more information is probably known now that what was known then.