You actually believe Mexico will pay for the wall?
That aside, Trump has huge investments overseas (whilst criticising other companies for doing exactly the same). Meanwhile, claims by Trump that he’ll put punitive tariffs on everything until everything is made in the USA (which is fundamentally the basis of his economics) simply won’t work. Prices will sky-rocket, unemployment will rise – the US is too great a part of the global economy now to unilaterally secede from it. And the worst of it is that Trump is a practising hypocrite on this point yet his supporters don’t seem to care. Donald Trump suits, for example, are made with cheap labour in China and South America. Why isn’t he giving Americans jobs?