12 C.F.R. § 37.3 – Prohibited practices.

(a) Anti-tying. A national bank may not extend credit nor alter the terms or conditions of an extension of credit conditioned upon the customer entering into a debt cancellation contract or debt suspension agreement with the bank.
(b) Misrepresentations generally. A national bank may not engage in any practice or use any advertisement that could mislead or otherwise cause a reasonable person to reach an erroneous belief with respect to information that must be disclosed under this part.
(c) Prohibited contract terms. A national bank may not offer debt cancellation contracts or debt suspension agreements that contain terms:
1. (1) Giving the bank the right unilaterally to modify the contract unless:
  1. (i) The modification is favorable to the customer and is made without additional charge to the customer; or
  2. (ii) The customer is notified of any proposed change and is provided a reasonable opportunity to cancel the contract without penalty before the change goes into effect; or
2. (2) Requiring a lump sum, single payment for the contract payable at the outset of the contract, where the debt subject to the contract is a residential mortgage loan.