Izzy Einstein and Moe Smith

Isidor "Izzy" Einstein (1880–1938) and Moe W. Smith (1887–1960) were United States federal police officers, agents of the U.S. Prohibition Unit, who achieved the most arrests and convictions during the first years of the alcohol prohibition era (1920–1925). They were known nationally for successfully shutting down illegal speakeasies and for using disguises in their work.

They made 4,933 arrests. In late 1925, Izzy and Moe were laid off in a reorganization of the bureau of enforcement. A report in Time magazine suggested they had attracted more publicity than wanted by the new political appointee heading the bureau, although the press and public loved the team. By 1930 both men were working as insurance salesmen.