14th Amendment:

"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."

Justice Scalia:
This does not apply to women today because, in 1868 when the 14th amendment was written, women weren't "persons".

Ta-da!