Sorry to say that Trump may not be as intelligent as some may think. If he was he might have stopped using his twitter account to attack everyone who says anything against him at 3 in the morning when his staff is sound asleep. He ran for President on a lark is the word he used in a recent interview. He was certain that he would lose. The Russian president Putin was so afraid of having to face Hillary that he made sure that she did not get in. Now, what with the information that Russia has on Trump, Russia will be running the US... Just because Trump says something does not make it true or false, which ever is the case. It just means that it is, or is not, a part of what this spoiled man child wants or doesn't want.
Now, about Trump closing the border between Mexico and the US. I watched, with great interest, and interview with Pierre Dolbec, owner of Dolbec Int'l here in the Quebec city region. They offer logistical services, consulting services and are a custom broker. He stated in the interview, that IF Trump throws out the NAFTA (North American Free Trade Agreement) and closes the US border access to and from Mexico, that this would be catastrophic for Canadian trade. All of the merchandise that travels in bond through the US to and from Canada would not make it through the Canada/US border. It would all have to travel by boat. Now, if you don't do any in bond loads you might think that this will not effect you. You would be wrong because, all of those who do will then be looking to do the loads that you/we usually do. Then there are the reefer loads that will not be coming out of AZ and TX. So we'll have all of those reefers fighting to do our dry van loads.This would change capacity for outbound and inbound freight, I'm sure that you would all agree on that.
I like spend part of my Sunday mornings listening to those political discussion shows both in Canada and the US. No one really realizes how this will touch their everyday lives. That Iphone that costs about 8 or 900 $ will skyrocket to about 2000$ and so on, for many other everyday items like that TV that was mentioned. You thought that Cauliflower was expensive at $8. We'll find that cheap if the border is closed. I know that many here in Canada will not want to admit it but, Trump will have an effect on ALL of north american trade. He is a dangerous man who has no regard for anyone, not even those middle class, middle age white men who voted him in.