• 3 Border security
• 3 Emigration and immigration
• 2 Boundaries
• 2 Design and construction
• 2 Fences
• 2 Immigrants
• 2 Immigration enforcement
• 2 Technological innovations
• 1 Border crossing
• 1 Family reunification
• 1 Immigrant children

• 3 Alfonsi, Sharyn
• 2 Campanile, Guy
• 2 Kroft, Steve
• 2 Sharman, Keith
• 1 Cavin, Tony
• 1 De Granados, Oriana Zill
• 1 Hatcher, Lucy

• 5 English

• 5 United States
• 3 Mexico
• 1 El Salvador

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