Marketplace – When the United States, Mexico, and Canada launched the negotiations for NAFTA, each nation sent a delegate to work out the details. Mexico sent Dr. Jaime Serra, the Minister of Trade and Industry there at the time. He joined Carla Hills from the United States and Michael Wilson from Canada. The trio worked together over several months to put together the deal. Marketplace host Kai Ryssdal talked to Serra about his experience and what he sees for the future of NAFTA in the Trump administration. An edited transcript of the conversation follows.