He’s not serious about the fence. He just thinks he is serious, because he hasn’t really looked at the border enough to understand that a full-border fence is unworkable.
But when he figures it out, he’ll apologize for saying he would build the fence, or he’ll say it was a joke, or say that he never said he would build a full fence, or that we don’t understand what he meant by full.
He’s a talk show host, so he knows all sorts of ways to say things. But still, since we can’t have Rush Limbaugh for President.....
“He just thinks he is serious, because he hasn’t really looked at the border enough to understand that a full-border fence is unworkable.”
Back up the assertion a full fence is unworkable. Don’t just say it. Prove it.
Remember, we live in orbit on the space station, drill for oil in 13000 feet of water and build cities filled with skyscrapers...
So a piddly little fence cannot be done? China did it a thousand years ago with a fraction of the tech we have.