In his new paper, "Paving the way for U.S. Climate Leadership: The Case for Executive Agreements and Climate Protection Authority," Nigel Purvis, a former U.S. climate negotiator and current visiting scholar at Resources for the Future, explains why he believes the United States should negotiate a congressional-executive agreement on climate instead of a treaty. He also urges the United States to jointly negotiate domestic and international agreements. During today's OnPoint, Purvis discusses his paper and gives his take on current climate negotiations.