Minimizing TSA inspection of boxes (by avoiding domestic US flights to get your goods to your US destination) is likely to mean better protection of your goods, since the TSA has a history of ripping up checked luggage boxes out of your sight and not necessarily repacking the items properly.

Even simple Lego boxes and the Lego toys in checked luggage have been ruined and lost by the TSA in a way that even some young children haven't managed to do. Even when well protected in hard suitcases.