One of President Donald Trump's campaign promises was to "Build the Wall", referring to a security wall on the US-Mexican border. The main reason for this was to prevent illegal immigrants (or "undocumented migrants" as some say) from entering the country from Mexico. Was Trump the first person to suggest a wall on the border? No, not really. Maybe he wants to make a bigger, taller, stronger one or something, but there is already an existing border fence along many parts of the US-Mexico border.
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Map of US-Mexico wall |
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US-Mexico border wall map |
You can see that there is already a fence along most of the Mexican border with California, part of the border with Arizona, a little bit of the border with New Mexico, and a very little bit of the border with Texas.
This map shows the areas that have NO fence or wall at all: