42 U.S.C. sec. 666 (a) (17)
"In order to satisfy section 654(20)(A) of this title, each State must have in effect laws requiring the use of the following procedures, consistent with this section and with regulations of the Secretary, to increase the effectiveness of the program which the State administers under this part: . . .
(17) Financial institution data matches. -
(A) In general. - Procedures under which the State agency shall enter into agreements with financial institutions doing business in the State -
(i) to develop and operate, in coordination with such financial institutions, and the Federal Parent Locator Service in the case of financial institutions doing business in two or more States, a data match system, using automated data exchanges to the maximum extent feasible, in which each such financial institution is required to provide for each calendar quarter the name, record address, social security number or other taxpayer identification number, and other identifying information for each noncustodial parent who maintains an account at such institution and who owes past-due support, as identified by the State by name and social security number or other taxpayer identification number; and
(ii) in response to a notice of lien or levy, encumber or surrender, as the case may be, assets held by such institution on behalf of any noncustodial parent who is subject to a child support lien pursuant to paragraph (4).
(B) Reasonable fees. - The State agency may pay a reasonable fee to a financial institution for conducting the data match provided for in subparagraph (A)(i), not to exceed the actual costs incurred by such financial institution.
(C) Liability. - A financial institution shall not be liable under any Federal or State law to any person -
(i) for any disclosure of information to the State agency under subparagraph (A)(i);
(ii) for encumbering or surrendering any assets held by such financial institution in response to a notice of lien or levy issued by the State agency as provided for in subparagraph (A)(ii); or
(iii) for any other action taken in good faith to comply with the requirements of subparagraph (A).
(D) Definitions. - For purposes of this paragraph -
(i) Financial institution. - The term ''financial institution'' has the meaning given to such term by section 669A(d)(1) of this title.
(ii) Account. - The term ''account'' means a demand deposit account, checking or negotiable withdrawal order account, savings account, time deposit account, or money-market mutual fund account."