The introductory chapter of this volume on immigration into the United States is entitled "Overview: A Time of Reform and Reappraisal" (D. Simcox), and it introduces the topics of reform, legal and illegal immigration, the effect of immigration on the labor market and social welfare, and immigration enforcement methods that are discussed in the other 15 articles. The articles include: "Network Recruitment and Labor Displacement" (P. Martin); "Seeking Common Ground for Blacks and Immigrants" (J. J. Jackson); "Hispanic Americans: The Debased Coin of Citizenship" (R. Estrada); "Ellis Island: The Building of a Heritage" (E. Sevareid); "Immigration and the National Interest" (O. Graham, Jr.); "A Kind of Discordant Harmony: Issues in Assimilation" (G. Bikales and G. Imhoff);"Immigration, Population Change, and California's Future" (L. Bouvier); "Mexicans: California's Newest Immigrants" (The Urban Institute); "Immigration in the Golden State: The Tarnished Dream" (R. Marshall); "Mexico's Dilemma: Finding a Million Jobs a Year" (D. Simcox); "Employer Sanctions in Europe: Deterrence without Discrimination" (M. Miller); "Europe's Lessons for America" (M. R. Lovell, Jr.); "Principles vs. Expediency in U.S. Immigration Policy" (L. Fuchs); "The U.S. Refugee Industry: Doing Well by Doing Good" (B. Zall); and "How Many Americans?" (L. Grant). The appendix contains a summary of the Immigration Reform and Control Act of 1986. Tables are included. (DJC)