The nuclear family is often thought of as a pillar of American achievement. Two-parent families have been championed in both rhetoric - and policy - as having a key role in climbing the social ladder in the U.S. But a new book by Milwaukee-native Christina Cross is challenging this idea. Cross is a sociologist and the author of Inherited Inequality: Why Opportunity Gaps Persist between Black and White Youth Raised in Two-Parent Families.   In her book, Cross breaks down the data along racial lines - finding that the nuclear family isn’t nearly as beneficial to Black Americans as it has been for white Americans. Cross joins Lake Effect’s Joy Powers to talk about her findings - and how prioritizing two-parent families has shaped U.S. policy for decades.