According to this Vox interview with Jenny Schuetz (https://www.vox.com/2019/5/17/18628267/jenny-schuetz-weeds-interview https://www.vox.com/2019/5/17/18628267/

According to this Vox interview with Jenny Schuetz (https://www.vox.com/2019/5/17/18628267/jenny-schuetz-weeds-interview https://www.vox.com/2019/5/17/18628267/jenny-schuetz-weeds-i...), there are two housing crises: the superstar city crisis of million dollar homes due to exclusionary zoning, and rising rents for low-income households in the rest of the country. According to Kevin Erdmann, the crisis in the rest of the country was caused by federal policies that restricted lending to low-income households, forcing them to rent for more than they would have paid in mortgage (https://www.mercatus.org/tags/housing-affordability-series https://www.mercatus.org/tags/housing-affordability-series https://www.amazon.com/Shut-Out-Shortage-Recession-University/dp/1538122146 https://www.amazon.com/Shut-Out-Shortage-Recession-Universit...). When Kevin Drum looks at national medians, he entirely misses both of these problems.