The provisions of section
1826a
(a) and section
1826a
(b)(3) and (4) of this title (except to the extent that such provisions apply to sport fishing equipment or fish or fish products not caught by the vessels engaged in illegal, unreported, or unregulated fishing) shall apply to any nation identified under subsection (a) that has not been certified by the Secretary under this subsection, or for which the Secretary has issued a negative certification under this subsection, but shall not apply to any nation identified under subsection (a) for which the Secretary has issued a positive certification under this subsection.