Who will pay for the wall?

So the Twamp creatures are moving forward with The Wall. And Twamp is still claiming Mexico will pay for it.Which of course they will not. So now Twamp floats the idea that if they won't pay for then the US will put a 20% tariff on their goods imported into the US. But that still doesn't mean Mexico pays for the wall; it means we, the consumer, pays for in higher prices. Does Twamp think we're that stupid? Unfortunately, some of us--meaning Twamp supporters--are indeed that stupid. And that doesn't mean that such recognition means we are denigrating them or not valuing them; it's just one of those facts.