What is ‘abundance’ liberalism, and why are people arguing about it?

A new book has sparked debate with its provocative claim that progressive public policy in the US is broken

Is progressive public policy in America broken? Do many left-leaning laws actually make life more expensive for struggling people? Is regulatory red tape hindering growth and innovation? Have Democratic-run cities, such as New York and San Francisco, become giant billboards against liberal governance?

These arguments wouldn't sound out of place in a policy paper from a conservative thinktank. Yet their newest champions are two of America's best-known left-leaning journalists, the New York Times' Ezra Klein and the Atlantic's Derek Thompson - and they believe the left is overdue for a reckoning of sorts.