WASHINGTON - In a potential challenge to states that are considering  "opting out" of interstate branching, federal regulators said Wednesday   they will approve the creation of a multistate bank in a state which bars   the practice.     
Overriding the strenuous objections of Kansas bank regulators, the  Comptroller's office allowed Lenexa-based Bank Midwest of Kansas to move   its main office across state lines in a merger with Bank Midwest, its   sister institution in Kansas City, Mo.     
  
As part of its approval, the Comptroller's office for the first time  asserted that a state's restrictions on out-of-state banks owning branches   violates the Constitution's commerce clause.   
"By hook or by crook, Comptroller (Eugene A.) Ludwig is aggressively  pushing interstate banking and branching," said Kenneth Guenther, executive   vice president of the Independent Bankers Association of America.   
  
The Conference of State Bank Supervisors also protested the decision,  which would allow the formation of a $991 million-asset institution called   Bank Midwest. The banks are subsidiaries of Dickinson Financial Corp.   
"It does seriously undercut some of the state jurisdiction and also  jumps the gun" on the interstate branching law passed last year, said   Robert A. Richard, vice president for regulatory services at the state   regulators group.     
Mr. Guenther said that because that law gives states until June, 1997 to  opt out of interstate branching, the Comptroller's office "is doing by   regulatory fiat what the Congress clearly left for the states."   
  
The Comptroller's office has previously cited an 1886 statute that  allows national banks to move their headquarters up to 30 miles - even   across state lines - and retain branches in both states. Lenexa is 16 miles   from Kansas City, Mo.     
But until Feb. 16 when it approved the Bank Midwest application, it had  not invoked the statute in a state that bars out-of-state banks from owning   branches.   
The Comptroller's office asserted that Kansas' restrictions not only are  preempted by federal law, but also violate the Constitution, which bars   states from restricting interstate commerce.   
Despite the views of Kansas' bank commissioner and its governor at the  time, the state's attorney general agreed with the Comptroller's office in   a Sept. 21 opinion.   
  
Legislation is already pending in the statehouse to have Kansas opt out  of the interstate branching law. In a Nov. 30 letter to Mr. Ludwig, then-   Gov. Joan Finney suggested the Comptroller's office could make it difficult   for Kansas to take that step.     
"If national banks are allowed to begin developing interstate branching  networks in Kansas, the discussion of opting in or opting out becomes   irreconcilably skewed, because any party arguing for Kansas to opt out,   would be arguing to heap a tremendous competitive disadvantage upon Kansas   state banks."       
"By ignoring our state prohibition, and allowing the suggested  transaction, the OCC will end the debate in Kansas before it begins," she   added.