Mass. Gen. Laws ch. 119A § 2
The IV-D agency shall also enforce the subrogation rights of the department of transitional assistance under section 21 of chapter 18, the subrogation rights of the department of children and families under section 23 of chapter 119, and the subrogation rights of the division of medical assistance under section 23 of chapter 118E, and shall provide IV-D services for each child for whom assistance is provided pursuant to Title IV, Parts A and E, and Title XIX of the Social Security Act, or other public assistance programs as required by federal or state law, and for whom such assistance has been provided. In enforcing such subrogation rights, the IV-D agency may proceed to establish a support order pursuant to section 32F of chapter 209, or to establish paternity or a support order pursuant to chapter 209C, notwithstanding the failure of the obligee whose rights to support have been subrogated to the commonwealth to attend a hearing in an action pursuant to said chapters, upon a showing that written notice of the hearing was provided to the obligee by first class mail to the most recent residential address that the obligee has provided to the department of transitional assistance, the department of children and families or the division of medical assistance. Pursuant to section 18A of chapter 18, the IV-D agency shall make the determination and redetermination at appropriate intervals as to whether an individual who has applied for or is receiving assistance under Part A or Title XIX of the Social Security Act is cooperating in good faith with the IV-D agency in establishing the paternity of, or in establishing, modifying, or enforcing a support order for, any child of the individual by providing the IV-D agency with the name of and such other information with respect to the noncustodial parent of the child, as required by regulation promulgated by the commissioner of revenue and subject to good cause and other exceptions determined by the department of transitional assistance and the division of medical assistance. IV-D services shall be made available to residents of other states and to residents of foreign reciprocating countries on the same basis as to residents of the commonwealth, provided there is jurisdiction over the parties, their income or assets; provided further that no application will be required from, and no costs for such services will be assessed against, the foreign reciprocating country or foreign obligee; provided, however, that costs may be assessed against the obligor. The IV-D agency shall enforce any support obligation established with respect to the custodial parent of a child receiving IV-D services from the IV-D agency; provided, however, the IV-D agency is not required to establish or modify a support obligation with respect to such custodial parent.
Mass. Gen. Laws ch. 119A, § 2