Yes, it is legal only if you have no intention on reselling them. All of the nation's federal laws center around selling of counterfeit goods. In California the closest penal code dealing with counterfeit goods is PC 350 which only addresses selling of these goods.So if you order a typical batch order of 10 jerseys from China there is nothing suspicious about that.
But if you order 1000 jerseys, well.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.