Additional sources of data or information, including government agencies:

Population and Sprawl Data

• U.S. Bureau of the Census
• U.S. Department of Agriculture
• Natural Resources Conservation Service

Congressional Voting Records and Legislative Descriptions

• Library of Congress
• Congressional Record
• U.S. House and U.S. Senate websites

Immigration Data

• Immigration and Naturalization Service
• U.S. Bureau of the Census

Federal Commissions

• Leon Bouvier, Ph.D., Scheuer Committee; Select Commission on Immigration Policy and the National Interest
• Lindsay Grant, Ph.D., Global 2000 Report to the President

Economics

• Most economics information on this website either is taken directly from government data, has been analyzed by the Center for Immigration Studies (a Washington-based think tank), was edited by W.W. Norton & Company (the prestigious New York publisher), or was reviewed by labor economist Vernon Briggs of Cornell University. In most cases, citations are provided to allow you to do your own checking.