OK, tenpin477 is right:
From the PBA faq section:
Q: Do I have to be a member in good standing with the USBC?
A: You must be a member in good standing with the United States Bowling Congress (USBC) in order to participate in PBA events. If for some reason your USBC membership is suspended, you will not be permitted to bowl in PBA events until your USBC membership has been reinstated.
--------------------
dR3w
"Some people are like slinkies, not really good for anything, but they bring a smile to your face when pushed down the stairs."