It’s a central premise of the American dream: If you’re willing to work hard, you’ll be able to make a living and build a better life for your children. But what if working hard isn’t enough to get ahead — or even to ensure your family’s basic financial stability? Two American Families: 1991-2024, a special, two-hour documentary filmed over more than 30 years, is a portrait of perseverance from FRONTLINE,... see more