But new research suggests the influx of low-skilled immigrants is already dropping, as forces that are far more powerful than a wall act to keep immigrants out. For decades, Latin America was still experiencing a baby boom when the United States was not. The United States has seen a substantial change in the character of its immigrants in recent years. Estimates by Pew Research indicate that, since 2009, more Mexican immigrants have returned to Mexico from the United States than migrated here. If these estimates prove true, the United States may not need to spend heavily on a border wall to keep low-skilled immigrants out, the researchers say.

Source: Washington Post March 24, 2017 15:20 UTC