Our most potentially disastrous national problem, along with the danger of nuclear war and threats to the environment, is the pressing catastrophe of massive illegal immigration. The 2,000-mile United States-Mexican border is the only place in the world where a wealthy, heavily industrialized stable country is confronted directly by a struggling, preindustrial nation. United States prosperity relies on a stable population, and Mexico, with her burgeoning population, increasing poverty, and massive unemployment, is threatening the traditional U.S. lifestyle. Stereotyped thinking, based on racism or fear, will not solve these problems. The Golden Door is a sensitive exploration of a difficult situation, and this edition includes material on the Cuban, Salvadoran, and Haitian migration to the United States. Paul R. Ehrlich is Bing Professor of Population Studies and Professor of Biological Sciences at Stanford University. He is the author of hundreds of scientific papers, and numerous books including The Population Bomb and Betrayal of Science and Reason (Island Press, 1997). His latest book is The Dominant Animal: Human Evolution and the Environment, which he co-authored with his wife Anne.