Intelligence Squared U.S. brings together the world's leading authorities for an exciting battle of ideas, wit and persuasion in a series of provocative and timely debates. Think twice as opposing panels challenge your convictions on some of the most critical issues our nation faces today. Best of all, your vote decides who has carried the day. John Donvan, correspondent for ABC News Nightline, moderates the IQ2US series. The debates can be seen live at NYU Skirball Center, watched on the Bloomberg Television Network, heard on more than 185 NPR stations and downloaded from iTunes.