7 Tex. Admin. Code § 91.803
A credit union may invest in certificates of deposit and passbook type accounts issued by an insured state or national bank or other similar institution, provided that the total investments in any one institution shall not exceed 10% of the capital and surplus of that institution, unless such investments are 100% secured by securities issued or guaranteed by the United States or any agency or instrumentality thereof.
Source Note:The provisions of this §91.803 adopted to be effective March 8, 1984, 9 TexReg 1155; amended to be effective July 8, 1994, 19 TexReg 4939.