Nouriel Roubini, Roubini MacroAssociates CEO & 'Megathreats' Author, discusses the "megathreats" facing the US economy. Jean Boivin, Head of the BlackRock Investment Institute, says it's very hard to see something that's a smooth landing in any way. Mary Barra, General Motors CEO, discusses third-quarter results, efforts to address supply-chain issues and electric-vehicle expansion plans. Jordan Rochester, Nomura International G-10 FX Strategist, says the UK is the canary in the coal mine for everybody around the world.