Because loyalty investigators rarely distinguished between Communists and other leftists, many noncommunist leftists were forced to leave government or deny their political views. Storrs finds that loyalty defendants were more numerous at higher ranks of the civil service than previously thought, and that many were women, or men with accomplished leftist wives. Uncovering a forceful left-feminist presence in the New Deal, she shows how opponents on the Right exploited popular hostility to powerful women and their “effeminate” spouses. The loyalty program not only destroyed many promising careers, it prohibited discussion of social democratic policy ideas in government circles, narrowing the scope of political discourse to this day. Through a gripping narrative based on remarkable new sources, Storrs demonstrates how the Second Red Scare undermined the reform potential of the New Deal and crippled the American welfare state.