Does Trump want to literally build a wall across the entire southern border?

I'm struggling to figure out if he's serious or not. Part of me starts thinking about the logistics and the actual efficacy of building a physical wall, let alone this outmoded pretechnological thinking. While I had a hard time thinking Trump would actually think he's espousing a good idea, it... show more I'm struggling to figure out if he's serious or not. Part of me starts thinking about the logistics and the actual efficacy of building a physical wall, let alone this outmoded pretechnological thinking.

While I had a hard time thinking Trump would actually think he's espousing a good idea, it wouldn't shock me if he really was an overly ideological dinosaur.

Help me out here, if this guy serious or is he using the wall as a metaphor or something?
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