Somewhere in the rules it talked about the PBA acknowledging that the USBC was the governing body, but that was more related to having to be in good standing with the USBC to be eligible for the PBA not specifically about ball specs.
So it depends on how encompassing you want to go with the USBC being the governing body.
As far as I can tell, PBA uses a subset of what is allowed in USBC bowling.
i.e. if PBA isn't paid, you can't use the product in the PBA, but you can in the USBC.
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