Ill. Admin. Code tit. 38, § 365.40
a) A bank making a payday loan shall satisfactorily address all safety and soundness considerations identified by the Division in its examination and supervision of the bank. Safety and soundness considerations include, without limitation:
2) Capital adequacy, depending on the level and volatility of risk;
b) In the event the Division determines the bank's management of safety and soundness risks relating to its payday loan portfolio is deficient, the Division
may initiate corrective enforcement action, as authorized under Section 48 of the Illinois Banking Act.