Legal status as a black person was contingent in most Southern states on the "One Drop Rule," in which being able to trace any portion of ancestry to people labelled of a race other than white would have one classified automatically as non-white. The skin colour of the albino person would not change the fact that they had ancestors who were non-white. In the example legislation from Virginia quoted below, exemptions were made for people with American Indian ancestry below certain proportions.

For the purpose of this act, the term "white person" shall apply only to the person who has no trace whatsoever of any blood other than Caucasian; but persons who have one-sixteenth or less of the blood of the American Indian and have no other non-Caucasic blood shall be deemed to be white persons. - Virginia Racial Integrity Act of 1924

While albinism causes extremely pale skin and light hair colouration, the lack of melanin does not change your build, hair texture, facial features, etc. The Tanzanian albinos photographed with non-albino family members in this article share the features of their kin regardless of their very different skin tones. An albino person of enough mixed race heritage to have facial features and hair within the range of those considered normal for a contemporary white person might have an easier time passing for white at a glance, but other common symptoms such as red/violet eye colour, extreme light sensitivity, and rapid involuntary eye twitching would make concealing one's status as an albino difficult.