This document provides a transcript of a hearing of the House Subcommittee on Census and Population which focused on immigration statistics and ways of improving the methods of accounting for all immigrants. Prepared statements were presented by four witnesses: (1) Daniel B. Levine, the director of the Panel on Immigrations Statistics, who discussed the type of data needed for developing immigration policies; (2) John E. Nahan, the director of the Office of Plans and Analysis, Immigration and Naturalization Service (INS), commenting on the INS's efforts to reform its statistics collection; (3) Jeffrey S. Passel, of the Demographic Research Population Division, Bureau of the Census, who described the role of the Census Bureau in immigration statistics and presented some of its findings on the numbers and characteristics of undocumented aliens; and (4) Alejandro Portes, a sociologist, who presented a report on the adaptation process of 1980 Cuban and Haitian refugees in South Florida. In general, it was observed that current statistical reporting practices do not provide sufficient information to analyze the impact of immigration or to make policy decisions. (KH)