Taken as a whole, the peoples of the world are reproducing at a higher rate than in the past.

The text points out that all nations must attain population growth rates of less than 1 percent as soon as possible if the world is to avoid the wars, famines, and exhaustion of resources caused by overpopulation.

The demographic transition first occurred in the United States.

The text points out that the standard of living and the level of living are identical measures.

Over time, the gaps in living standards between the have and have-not societies have narrowed considerably.

The text points out that family planning and population control are not synonymous.

Immigration to the United States has reached levels unmatched since early in this century.

Since the 1970s, the rate of legal immigration to the United States has declined.

The U.S. Immigration and Naturalization Service (INS) estimates that there are approximately 2.7 million illegal immigrants not residing in the United States.

In the United States, population-related policies focus mainly on immigration, particularly illegal immigration.