Good question, yeah I'd be interested in hearing what national does for the clubs at the local level.
Doesn't seem like it comes in the form of any financial benefit, the other way around from what I understand. I guess Clubs can offer "USPSA" sanctioned matches? As in, someone registering for a match could presume it was run to USPSA standards...hopefully? IDK if a match has to be "under" USPSA for a classification score to be submitted "fo real" or not, also.
Otherwise I got nothin'.