How the Cost of Housing Became So Crushing

Over the past year, frustration over the cost of housing in the United States has become a centerpiece of the presidential race, a focus of government policy and an agonizing nationwide problem. Conor Dougherty, who covers housing for The Times, explains why the origin of the housing crisis is what makes it so hard to solve. Guest: Conor Dougherty, who covers housing for The New York Times.