Answer:
Bureau of Consumer Financial Protection - 12 CFR Chapter X
Part 1005 - Electronic Fund Transfers (Regulation E)
1005.13 Administrative enforcement; record retention.
(b) Record retention. (1) Any person subject to the Act and this part shall retain evidence of compliance with the requirements imposed by the Act and this part for a period of not less than two years from the date disclosures are required to be made or action is required to be taken.