; (ii) withdraw, suspend, or limit the application of duty-free treatment to any article of the country that is described in subsection (b)(1) or section 112 of the African Growth and Opportunity Act ( 19 U.S.C. 3721 ); (iii) issue a warning letter to the country detailing concerns with the lack of progress of the country in meeting the requirements described in paragraph (1) and providing notice that, if corrective action is not taken before the next review of the country under paragraph (2), the President may take action under clause (i) or (ii) based on the results of that review; or (iv) take no action under clause (i), (ii), or (iii) if the President determines that— (I) the compliance of the country with the requirements described in paragraph (1) will be most effectively promoted by other means; or (II) the economic and foreign policy interests of the United States will be most effectively advanced by taking no action. (B) Effective date An action taken under subparagraph (A) shall be effective with respect to a country— (i) for biennial reviews conducted under paragraph (2)(A), on January 1 of the year following the year in which the determination that the country is not making continual progress in meeting the requirements described in paragraph (1) is made