The borders between the United States and foreign countries are important locations. Goods and people cross them constantly as they move from one nation to another. Readers discover what happens at these borders and how they are protected through enlightening main text and sidebars that provide additional information. Full-color photographs are also included, helping readers visualize the borders between the United States and its neighbors. Border protection is often in the news, and readers will develop a stronger sense of why this issue is so important as they explore this timely topic.