As long as the reason is not race, sexuality, gender, religion, physical ability, or other protected class, any private business should absolutely have the right to refuse service. What if having this lying sack of shit eating there made the employees feel uncomfortable? What if someone's relative was put in a cage by her boss's actions? What if the other patrons were chased off by her presence? Sarah Sanders is not a protected class, she's a lying asshole and lying assholes should be discriminated against.