N.M. Stat. § 6-10-21
for deposits; safekeeping; regulations of state
board of finance.
The state board of finance is authorized and directed to regulate, by general
regulation or by special orders applicable to individual cases, the safekeeping of bonds
or other securities delivered by any bank or savings and loan association as security for
deposits of public money. The bonds or securities shall be delivered to a third-party
custodian, which shall be a federal reserve bank or branch thereof or in any other bank
designated by the state board of finance and qualified to perform custodial functions in
the state of New Mexico. The bank or savings and loan association delivering securities
to that custodial bank shall enter into a written agreement with the custodial bank
containing such conditions that will adequately protect the interests of the state, county,
city, school district or institution interested in the bonds and securities.