Could it not have been a handkerchief? Even if Kerry had notes and, thus, cheated, what are we - what is anyone - supposed to do about it?
I think it's more likely Lehrer pre-fed him the questions.
I can answer that question more definitively later, but on first review, the object behaves like a folded piece of paper, not a handkerchief.
MM
If Im going BLIND and the item he withdrew from his coat pocket...was a PEN WHY......... DOES HE HAVE A PEN....... IN HIS RIGHT HAND..... AS WELL?