Max is a 41-year-old single male executive who is gay. He does not attempt to conceal his gender identity, but he is a private person by nature and does not discuss his personal life at work. He has been employed with his company for over a year and is very good at his work. The company CEO learns that Max is a member of a community gay softball team. The team won the local league championship and was pictured on the City's news website. The CEO saw Max in the photo. The CEO confronted Max about "concealing" his homosexuality and fired him.

According to the U.S. Supreme Court, what kind of discrimination claim does Max have against the company and under which law?