Presents the impact of the construction of the border wall between the United States and Mexico on American culture and identity and how it influenced Americans' views on border security, refugees, immigrants, and internal security. Provides interviews from people on all sides of the issue particularly the local people affected by it such as migrants, smugglers, border agents, activists, contractors, and border residents. Highlights the commerce between the United States and Mexico, legal and illegal activities, and the politics and enforcement of border protection in the region of San Diego, California, and Tijuana, Mexico.
