Texas Finance Code - FIN § 34.107. Engaging in Commerce Prohibited

(a) A state bank may not buy, sell, or otherwise deal in goods in trade or commerce or own or operate a business not part of the business of banking except:

(b) Engaging in an approved activity, directly or through a subsidiary, that is a financial activity or incidental or complementary to a financial activity, whether as principal or agent, is not considered to be engaging in commerce.