Six Oklahoma state banks are poised to use a wild-card provision to  overcome a strict branching law and obtain regulatory approval to open   offices anywhere in the state.   
Regulators are expected to decide the issue this week, said Pat   Mayes,   chairman of First American Bank and Trust of Purcell, Okla., one of the   petitioners.     
  
Before July, Oklahoma law prevented any bank or thrift from   operating   more than a main office and two branches. Even then, the branches had   to be   within a 25-mile radius and in a community lacking a local bank.       
Earlier this year, state banks helped defeat a bill that would have  renewed limits on thrift branching. That opened the door for national   bank   branching because of a separate law that gives national banks the same   rights as any other Oklahoma financial institution.       
  
Four national banks thereby gained regulatory approval to open   branches   throughout the state.   
Because of an Oklahoma law that gives state banks the same powers   as   national banks, state banks were thereby given a wild-card provision   entitling them to the same branching power. A decision in the state   banks'   favor would end a long fight over branching.         
Besides First American, the banks seeking to expand are Chickasha   Bank   and Trust Co. of Chickasha, Farmers and Merchants Bank of Crescent,   First   State Bank of Keyes, People First Bank of Hennessey, and Farmers State   Bank   of Quinton.           
  
-- Craig Woker