45 CFR § 309.20
Who submits a Tribal IV-D program application and where?
April 14, 2021
(a) The authorized representative of the Tribe or Tribal organization must sign and submit the Tribal IV-D program application.
(b) Applications must be submitted to the Office of Child Support Enforcement, Attention: Federal Office of Child Support Enforcement , with a copy to the appropriate regional office.
[69 FR 16672, Mar. 30, 2004, as amended at 85 FR 35208, June 9, 2020]