15 C.F.R. § 90.9 When formal procedure may be invoked.
Title 15 - Commerce and Foreign Trade
In the event the Chief, Population Division, is unable to resolve the challenge to the satisfaction of the challenging State or unit of local government, the challenging State or unit of local government shall be informed in writing of the reasons for the outcome and of its right to proceed formally.
Title 15: Commerce and Foreign Trade
PART 90—PROCEDURE FOR CHALLENGING CERTAIN POPULATION AND INCOME ESTIMATES
§ 90.9 When formal procedure may be invoked.