La. Stat. tit. 39 § 1224
The bonds, certificates of indebtedness, paving certificates, promissory notes, evidence of participation in promissory notes, and other interest-bearing securities or obligations furnished as security, shall be deposited with the depositing authority or with an unaffiliated bank or trust company or federal reserve bank or any Federal Home Loan Bank or its successor; such security, whether in the hands of the depositing authority or held in safekeeping or trust by any bank, trust company, federal reserve bank or Federal Home Loan Bank or its successor, shall be deemed to be under the control and in the possession of the depositing authority and deemed to be held in its name by the depository bank, trust company, federal reserve bank or Federal Home Loan Bank or its successor. The depository bank or trust company or federal reserve bank must be acceptable to both the depositing authority and the fiscal agent bank, and, if these two cannot agree, the commissioner of financial institutions shall designate a depository. Banks or trust companies which are subsidiaries of a bank holding company shall not be considered affiliated for the purposes of this Section.
La. R.S. § 39:1224