Edward Markey actually said...

"I think, at the end of the day, the question is going to be, what kind of security guarantees can the United States give to Kim if he gives up his nuclear weapons program?"

"I think we need to only give up sanctions directly related to concrete action on those things upon which the sanctions were imposed."

"do you believe that North Korea will want to retain a civilian nuclear power plant capacity, infrastructure, in the country?"

"It is my hope that, during the summit, it will be made clear to the regime that the only goal of our negotiations is denuclearization."