By Steven Mosher, Population Research Instititue - I believe that the United States, with its population of 328 million, does need more people, and I will tell you why. But before we get into why population growth is a net positive, we first have to dispel what even The New York Times has accurately called the “myth of overpopulation.”... The idea that human beings are breeding themselves off the face of the planet has been around for a while now. Many Americans still believe that the United States would be better off if we both stopped having children and stopped importing people, at least for a while.