(1) Retention of authority 
Notwithstanding section 203 (a)(1)1 of this title, authority related to Customs revenue functions that was vested in the Secretary of the Treasury by law before the effective date of this chapter under those provisions of law set forth in paragraph (2) shall not be transferred to the Secretary by reason of this chapter, and on and after the effective date of this chapter, the Secretary of the Treasury may delegate any such authority to the Secretary at the discretion of the Secretary of the Treasury. The Secretary of the Treasury shall consult with the Secretary regarding the exercise of any such authority not delegated to the Secretary.

(2) Statutes 
The provisions of law referred to in paragraph (1) are the following: the Tariff Act of 1930 [19 U.S.C. 1202 et seq.]; section 249 of the Revised Statutes of the United States (19 U.S.C. 3); section 2 of the Act of March 4, 1923 (19 U.S.C. 6); section 13031 of the Consolidated Omnibus Budget Reconciliation Act of 1985 (19 U.S.C. 58c); section 251 of the Revised Statutes of the United States (19 U.S.C. 66); section 1 of the Act of June 26, 1930 (19 U.S.C. 68); the Foreign Trade Zones Act (19 U.S.C. 81a et seq.); section 1 of the Act of March 2, 1911 (19 U.S.C. 198); the Trade Act of 1974 [19 U.S.C. 2101 et seq.]; the Trade Agreements Act of 1979; the North American Free Trade Area Implementation Act; the Uruguay Round Agreements Act; the Caribbean Basin Economic Recovery Act [19 U.S.C. 2701 et seq.]; the Andean Trade Preference Act [19 U.S.C. 3201 et seq.]; the African Growth and Opportunity Act [19 U.S.C. 3701 et seq.]; and any other provision of law vesting customs revenue functions in the Secretary of the Treasury.

(1) Maintenance of functions 
Notwithstanding any other provision of this chapter, the Secretary may not consolidate, discontinue, or diminish those functions described in paragraph (2) performed by the United States Customs Service (as established under section 211 of this title) on or after the effective date of this chapter, reduce the staffing level, or reduce the resources attributable to such functions, and the Secretary shall ensure that an appropriate management structure is implemented to carry out such functions.

(2) Functions 
The functions referred to in paragraph (1) are those functions performed by the following personnel, and associated support staff, of the United States Customs Service on the day before the effective date of this chapter: Import Specialists, Entry Specialists, Drawback Specialists, National Import Specialist, Fines and Penalties Specialists, attorneys of the Office of Regulations and Rulings, Customs Auditors, International Trade Specialists, Financial Systems Specialists.