is included in a list under subsection (a)(2) and ending on the date that that country is not included in such list, that country shall be subject to the following: (1) The Secretary of State may not issue visas under section 101(a)(15)(A)(iii) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(15)(A)(iii) ) to attendants, servants, personal employees, and members of their immediate families, of the officials and employees of that country who receive nonimmigrant status under clause (i) or (ii) of section 101(a)(15)(A) of such Act. (2) Each 6 months thereafter that the country is included in that list, the Secretary of State shall reduce the number of visas available under clause (i) or (ii) of section 101(a)(15)(A) of the Immigration and Nationality Act in a fiscal year to nationals of that country by an amount equal to 10 percent of the baseline visa number for that country. Except as provided under section 243(d) of the Immigration and Nationality Act ( 8 U.S.C. 1253 ), the Secretary may not reduce the number to a level below 20 percent of the baseline visa number. (c) Waivers (1) National security waiver If the Secretary of State submits to Congress a written determination that significant national security interests of the United States require a waiver of the sanctions under subsection (b), the Secretary may waive any reduction below 80 percent of the baseline visa number. The Secretary of Homeland Security may not delegate the authority under this subsection. (2) Temporary exigent circumstances If the Secretary of State submits to Congress a written determination that temporary exigent circumstances require a waiver of the sanctions under subsection (b), the Secretary may waive any reduction below 80 percent of the baseline visa number during 6-month renewable periods. The Secretary of Homeland Security may not delegate the authority under this subsection. (d) Exemption The Secretary of Homeland Security, in consultation with the Secretary of State, may exempt a country from inclusion in a list