On September 12, the OCC adopted an interim final rule to expand its rule on retail foreign exchange transactions to also apply to Federal savings associations and to make conforming changes to required risk disclosure statements. The rule became effective on September 12. Any federal savings associations engaged in a retail foreign exchange business prior to July 12 must request a supervisory no-objection within 30 days of the effective date to continue this business. OCC Release. OCC Interim Final Rule.