Trump is blind if he thinks that a massive border tax will work.  Any tax has to be across the board, he can't say tax, Ford but not GM if they manufacture abroad.  Neither can he tax the auto sector but not high tech.  

I challenge you to find a single piece of high tech hardware that is manufactured in the U.S.  Even much of hardware and software development are done abroad, hardware in China and software in India.    If  companies like Dell or HP were to try to move manufacturing there simply isn't enough capacity to do it.  That means that he will be slapping a 35% tax right on the consumers since there is no alternative.