§174.28. Consideration of additional arguments. — Inbound Citations

(a) A protest may be amended at any time prior to the expiration of the period within which the protest may be filed under § 174.12(e). The amendment may assert additional claims pertaining to the administrative decision that is the subject of the protest, or may challenge an additional administrative decision relating to the same category of merchandise that is the subject of the protest. For the presentation of additional grounds or arguments in support of a valid protest after the applicable protest period set forth in § 174.12(e) has expired, see § 174.28.