(a) Persons in Air Transportation. - An air carrier or foreign air carrier may not subject a person in air transportation to discrimination on the basis of race, color, national origin, religion, sex, or ancestry. (b) Use of Private Airports. - Notwithstanding any other provision of law, no State or local government may prohibit the use or full enjoyment of a private airport within its jurisdiction by any person on the basis of that person's race, color, national origin, religion, sex, or ancestry.