conservatives yes, nationalists, hell no.
libertarians should ve nationalists, the line must be drawn somewhere regarding to whom and to what the NAP should be applicable to. Id prefer it be drawn well.
Is rather put anything other than "a human being (or sapient humanoid) that does not have skin, eyes, or hair which are black or brown in color, who can produce sperm capable of sexual reproduction with an egg from a genetically compatible female" outside of the law.
That is the realm of property, not people. Females go there, prepubescent boys go there, and nonwhites definitely go there.
the adult white male can consent to whatever he likes being done with the fellow human beings that he owns so long as it does not violate the NAP with regard to the person/body or property/belongings of another individual adult white male.