If it is determined that the total number of immigrant visas made available under subsections (a) and (b) of section
1153 of this title to natives of any single foreign state or dependent area will exceed the numerical limitation specified in subsection (a)(2) of this section in any fiscal year, in determining the allotment of immigrant visa numbers to natives under subsections (a) and (b) of section
1153 of this title, visa numbers with respect to natives of that state or area shall be allocated (to the extent practicable and otherwise consistent with this section and section
1153 of this title) in a manner so that—
Nothing in this subsection shall be construed as limiting the number of visas that may be issued to natives of a foreign state or dependent area under section
1153
(a) or
1153
(b) of this title if there is insufficient demand for visas for such natives under section
1153
(b) or
1153
(a) of this title, respectively, or as limiting the number of visas that may be issued under section
1153
(a)(2)(A) of this title pursuant to subsection (a)(4)(A) of this section.