I think the AMA is an excellent organization and encourage modelers to join. OTOH I don't think membership in any organization should be required for enjoyment of an activity, such as being required to join Trout Unlimited to fish, Ducks Unlimited to hunt, SCCA to drive a Porsche, etc.

Clubs, naturally should be free to set their own requirements for activities conducted on their property or under their sponsorship, If for example a shooting range requires NRA membership, or a motorcycle club requires AMA (the other one) membership that is a different situation from engaging in those activities privately.

jess