A growing number of Americans, many of them retirees, are migrating to Mexico's beach resorts, border towns, and picturesque heartland. While considerable attention has been paid to Mexicans who immigrate to the U.S., the reverse scenario receives little scrutiny. Shifting the traditional lens of North American migration, The Other Side of the Fence takes a fascinating look at a demographic trend that presents significant implications for the United States and Mexico.

The first in-depth account of this trend, Sheila Croucher's study describes the cultural, economic, and...