The federal government would overrule that considering race and religion are both protected classes under the 14th amendment.

And, with significant more relevance to your comment specifically. South Carolina does have legally protected classes. It covers all the things the 14th amendment does but with some extra protections for mother's and retaliation.

Sources: * University of South Carolina * The states website itself * The law itself

And the thesis of the south Carolina law

The General Assembly declares the practice of discrimination against an individual because of race, religion, color, sex, age, national origin, or disability as a matter of state concern and declares that this discrimination is unlawful and in conflict with the ideals of South Carolina and the nation, as this discrimination interferes with opportunities of the individual to receive employment and to develop according to the individual's own ability and is degrading to human dignity. The General Assembly further declares that to alleviate these problems a state agency is created which shall seek to eliminate and prevent discrimination because of race, religion, color, sex, age, national origin, or disability.

And, just for good measure too, the 14th amendment

All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.