His campaign technically does, he doesn't. Which is why his rallies were little more than just a soapbox for him to air his grievances rather than discuss any actual policy.
Uh...that was a Trump thing, not a Republican thing. It only became a Republican thing after Trump won the nomination. It wasn't anywhere near as sophisticated or subtle as you think it was. And slogans, believe it or not, aren't boiled down policy. They're slogans.
Initially, it wasn't. He just said it, and said Mexico would pay for it -
https://www.washingtonpost.com/news/...sidential-bid/
It evolved into a racist wall as Trump continue to talk about it, not discussing any real
policies but instead calling asylum seekers and immigrants "rapists and murderers".
Some of us have been following this shit for years and remember the origins of things like "BUILD THE WALL" and "LOCK HER UP" and how they're little more than chorus chants and have nothing to do with policy.
Because it's a shit slogan. Don't get me wrong, I get what it
actually means and I absolutely, 100% support the goals. But it's a shit slogan. Not remotely comparable to a slogan created by a presidential candidate.