Edited sentence: "Rampant twentieth-century population growth has brought sobering new realities.He stated:.In 1975, he expressed his opinions on the need to reform immigration policy in a prize-winning essay International Migration, which became the cover article of the July 1976 issue of the magazine The Ecologist.In 1979, he organized FAIR, and later he helped to start CIS (1985) and NumbersUSA (1997).In the 1970s, Tanton began to focus on immigration as it was becoming the primary source of U.We must adjust our immigration paradigm and its derivative ethical system accordingly.population growth