"No props, notes, charts, diagrams, or other writings or other tangible things may be brought into the debate by any candidate."
Someone suggested the paper was blank, this is one of the top comments in reply to it
#1. Why would he bring out a piece of paper from his pocket if it was blank. Pen and paper was already provided, it was on the podium.#2. Obama did not take anything from his pocket and put it on the podium.
#3 Obama was writing with the pen and paper that was provided by the debate committee.
#4 Yes, while you are right there is no way to prove that there was something written on that piece of paper that Romney brought, it is rather quite odd and suspicious.
#5 This is not bias, just facts.