may in the Secretary’s discretion suspend the Guam and Northern Mariana Islands visa waiver program, or the Virgin Islands visa waiver program, at any time, on a country-by-country basis, for other good cause. (6) Addition of countries The Governor of Guam and the Governor of the Commonwealth of the Northern Mariana Islands, or the Governor of the Virgin Islands of the United States, may request the Secretary of the Interior and the Secretary of Homeland Security to add a particular country to the list of countries whose nationals may obtain the waiver provided by this subsection, and the Secretary of Homeland Security may grant such request after consultation with the Secretary of the Interior and the Secretary of State, and may promulgate regulations with respect to the inclusion of that country and any special requirements the Secretary of Homeland Security, in the Secretary’s sole discretion, may impose prior to allowing nationals of that country to obtain the waiver provided by this subsection. . (b) Regulations deadline Not later than one year after the date of enactment of this Act, the Secretary of Homeland Security, in consultation with the Secretary of the Interior and the Secretary of State, shall promulgate any necessary regulations to implement the waiver provided in the amendment made by subsection (a) for the Virgin Islands of the United States. (c) Waiver countries The regulations described in subsection (b) shall include a listing of all member or associate member countries of the Caribbean Community whose nationals may obtain, on a country-by-country basis, the waiver provided by this section, except that such regulations shall not provide for a listing of any country if the Secretary of Homeland Security determines that such country’s inclusion on such list would represent a threat to the welfare, safety, or security of the United States or its territories and commonwealths, or would increase fraud or abuse of the nonimmigrant visa system. (d) Conforming amendments (1) Documentation