; and (B) not more than 85 percent of the immigrant visas made available under each of paragraphs (2) and (3) of section 203(b) of the Immigration and Nationality Act ( 8 U.S.C. 1153(b) ) and not reserved under paragraph (1), may be allocated to immigrants who are native to any single foreign state or dependent area. (4) Special rule to prevent unused visas If, at the end of the third quarter of any fiscal year, the Secretary of State determines that the application of paragraphs (1) through (3) would result in visas made available under paragraph (2) or (3) of section 203(b) of the Immigration and Nationality Act ( 8 U.S.C. 1153(b) ) going unused in that fiscal year, such visas may be allocated during the remainder of such fiscal year without regard to paragraphs (1) through (3). (5) Rules for chargeability and dependents Section 202(b) of the Immigration and Nationality Act ( 8 U.S.C. 1152(b) ) shall apply in determining the foreign state to which an alien is chargeable, and section 203(d) of such Act ( 8 U.S.C. 1153(d) ) shall apply in allocating immigrant visas to family members, for purposes of this subsection. (6) Determination of two foreign states or dependent areas with highest demand The two foreign states or dependent areas with the highest demand for immigrant visas, as referred to in this subsection, are the two foreign states or dependent areas with the largest aggregate number beneficiaries of petitions for an immigrant visa under section 203(b) of the Immigration and Nationality Act ( 8 U.S.C. 1153(b) ) that have been approved, but where an immigrant visa is not yet available, as determined by the Secretary of State, in consultation with the Secretary of Homeland Security. 3. Posting available positions through the Department of Labor (a) Department of labor website Section 212(n) of the Immigration and Nationality Act ( 8 U.S.C. 1182(n) ) is amended by adding at the end the following: (6) For purposes of complying with paragraph (1)(C): (A) Not later than 180 days after the date of the enactment