Leon Kolankiewicz is an environmental/natural resource consultant and a former vice president of Carrying Capacity Network.
Roy Beck is the Director of NumbersUSA.com and author of The Case Against Immigration: The Moral, Economic, Social, and Environmental Reasons for Reducing U.S. Immigration Back to Traditional Levels (W.W. Norton & Co., 1996).
The Center for Immigration Studies is an independent, non-partisan, non-profit research organization founded in 1985.
It is the nation's only think tank devoted exclusively to research and policy analysis of the economic, social, demographic,
fiscal, and other impacts of immigration on the United States.