The debate over whether or not to increase the number of people living in the U.S. to 1.5 billion has been raging for more than a year.
The debate is over whether to make it 1.6 billion people in the United States, or 1.7 billion people worldwide. This is the first time in history that so many people have lived in the same place at the same time. The first time this has happened is in the 1950s, when the city of New York was the largest city in the world.