California's top income tax rate stands at 13.3%, whereas Arizona's sits at 2.5%. When are income taxes so high that they become counterproductive? At what point is a state income tax rate high enough to incentivize leaving the state?

Host Veronique de Rugy sits down with economist Joshua Rauh to discuss these questions and more.

Joshua Rauh is the Ormond Family Professor of Finance at Stanford's Graduate School of Business and a senior fellow at the Hoover Institution. He leads the Hoover Institution State and Local Government Initiative.