Immigration has a huge impact on Americans’ jobs and wages. Prior to the Second World War, in fact, the primary authority for the enforcement and administration of our nation’s immigration laws was vested in the Labor Department. Immigration law enforcement was moved to the Justice Department when our leaders realized that enemy saboteurs and spies were seeking to gain access to our nation to undermine our national security, not unlike the way it was moved into the Department of Homeland Security in the wake of the terror attacks of September 11, 2001.