Kodak Portra film "finished in Mexico"??

The new Portra samples I got, 35mm size, say made in USA, finished in Mexico. Does this mean that the film coated in Rochester is shipped as bulk master rolls to a "finishing" plant in Mexico to be cut, peforated and spooled? It would seem that this "finishing" process would be so automated that it would still make economic sense to do it in the USA.

Apparently not. Labour must form a significant part of the total cost, or else they would just do it in Rochester.

Mexico, Canada and the US form NAFTA which, ideally, is a "seamless" market place. So it is quite logical for companies to divide stages of the manufacturing process between plants within NAFTA regardless of what country.

In a seamless economic market space, why maintain parallel facilities performing the same processes simply because of political boundaries?

BTW: The auto companies are now dividing manufacturing stages within the NAFTA region the same way.