(v)
Unmarried sons or daughters who are physically or mentally disabled to the extent that they cannot adequately care for themselves or cannot establish, maintain or re-establish their own households. The Department of State or the Service may require certification(s) as it deems sufficient to document such mental or physical disability; or (Amended 8/9/10; 75 FR 47699)
(vi) An immediate family member of an A-1 or A-2 principal alien described in 22 CFR 41.21(a)(3)(i) to (iv) with A-1 or A-2 nonimmigrant status, who falls within a category of aliens recognized by the Department of State as qualifying dependents. (Added 8/9/10; 75 FR 47699)