Only when an apparel (sewing factory) industry is reestablished in the US of a size to produce a significant percentage of the clothing purchased in the US. During their primary, it was said several time that SC has lost 300,000 textile jobs in recent decades. That's why Trump and many others who have a clothing line have little choice but to seek overseas producers.
Some of those nations on your list you say Trump uses are definitely not cheap labor nations, but apparently still have a significant apparel industry.
if trump were serious he would be willing to sacrifice a bit of profit to make all his products in America. Heck trump could be innovative and start businesses that make his products in the US. Many states would make him deals where that would benefit them both.
I know of a designer whose apparel is shown on QVC when her clothes are made in the US she mentions it because she knows customers like that. It will only benefit trump to stop outsourcing his products.