Michigan Compiled Laws, Chapter 487. Financial Institutions § 487.3434

(a) Loans and extensions of credit to a customer secured by bills of lading, warehouse receipts, or similar documents transferring or securing title to readily marketable staples shall be subject to a limitation of 30% of capital and surplus of a stock savings bank, or 30% of total capital of a mutual savings bank, if the value of the staples securing the loans or extensions of credit at all times equals or exceeds 115% of the outstanding amount of the loans or extensions of credit. The staples shall be fully covered by insurance if it is customary to insure the staples.

(b) Loans or extensions of credit to a customer secured by shipping documents or instruments transferring or securing title covering livestock, or giving a lien on livestock, if the value of the livestock securing the obligation is not at any time less than 115% of the face amount of the notes covered, shall be subject to a limitation of 30% of capital and surplus of a stock savings bank, or 30% of total capital of a mutual savings bank. Loans or extensions of credit arising from the discount by dealers in dairy cattle of paper given in payment for dairy cattle, which paper carries a full recourse indorsement or unconditional guarantee of the seller and which are secured by the cattle being sold, shall be subject to a limitation of 30% of capital and surplus.

(c) Loans or extensions of credit arising from the discount of negotiable or nonnegotiable installment consumer paper which carries a full recourse indorsement or unconditional guarantee by a person transferring the paper, shall be subject to a limitation of 30% of capital and surplus of a stock savings bank, or 30% of total capital of a mutual savings bank. If the savings bank's files or the knowledge of its officers of the financial condition of each maker of the consumer paper is reasonably adequate, and an officer of the savings bank designated for that purpose by the board of directors of the savings bank certifies in writing that the savings bank is relying primarily upon the responsibility of each maker for the payment of the loans or extensions of credit, the limitations of this section as to the loans and extensions of credit of each maker shall be the sole applicable loan limitation. The certification shall be retained as part of the records of the savings bank.