For the first time, the FDIC has publicly released guidelines for how examiners should instruct banks to cut off accounts for risky customers suspected of violating the law, a major point of contention in the controversy over the Justice Department's "Operation Choke Point" probe. FDIC staff are required to use a formal, written process in cases where examiners find banks aren't managing the risks of account activity. All recommendations for termination of deposit accounts must be approved in writing by an FDIC regional director. The guidelines come after months of criticism from Republican lawmakers, who allege regulators have been too aggressive in pressing banks to avoid controversial customers such as payday lenders and gun dealers.