ORIGINAL: Silent-AV8R
AMA purchased the rights to what was called the International Model Show (IMS) that was held in Psadena, CA for as long as I can remember.
So, AMA
purchased the rights...
changed the name...then the location...but somehow, that is "just cause" for it to be other than more accessible to most of the AMA members. Somehow that begs the question and brings us to: Why did AMA purchase "rights" in the first place? It seems most if not all the goodwill associated with the IMS has been deleted...or rebranded...of course, there is probably another reasonable sounding explanation.
Look, I am not trying to make some conspiracy case out of the OP's question and I certainly realize a lot went into the decision that may never be known but by the same token the Southwest Aero modeling convention, headed by Sandy F, in the more centrally located region was not taken under AMA's wing. It is just hard to reconcile the whys.