19 CFR 159.11: Entries liquidated by operation of law.

(a) Time limit generally. Except as provided in § 159.12, an entry not liquidated within one year from the date of entry of the merchandise, or the date of final withdrawal of all merchandise covered by a warehouse entry, will be deemed liquidated by operation of law at the rate of duty, value, quantity, and amount of duties asserted by the importer of record. Notice of liquidation will be given electronically as provided in §§ 159.9 and 159.10(c)(3) of this part. CBP will endeavor to provide a courtesy notice of liquidation in accordance with § 159.9(d).

(b) Applicability. The provisions of this section and § 159.12 will apply to entries of merchandise for consumption or withdrawals of merchandise for consumption made on or after April 1, 1979.