In 1965, the political elite on Capitol Hill may not have predicted a mass increase in immigration. But Marian Smith, the historian for Customs and Immigration Services, showed me a small agency booklet from 1966 that certainly did. It explains how each provision in the new law would lead to a rapid increase in applications and a big jump in workload — more and more so as word trickled out to those newly eligible to come. Smith says a lifetime of immigration backlogs had built up among America's foreign-born minorities. These immigrants would petition for relatives to come to the United States, and those relatives in turn would petition for other family members. Demand from post-colonial countries in Asia and Africa, she notes, jumped after World War II.