
A majority of the U.S. Supreme Court has found that a federal law preventing discrimination on the basis of biological sex also covers sexual orientation and gender identity even though it doesn't mention those characteristics.
On a 6-3 vote – including reputed conservatives Chief Justice John Roberts and associate justice Neil Gorsuch – the court found that the federal Civil Rights Act of 1964 makes it illegal to fire an employee for being homosexual or transgender because "it is impossible to discriminate against a person for being homosexual or transgender without discriminating against that individual based on sex."