Any number of ways: - What are your hobbies? - What drives you? - Where do you see yourself in five years? - Would you be willing to work long hours often?

Any number of ways: - What are your hobbies? - What drives you? - Where do you see yourself in five years? - Would you be willing to work long hours often? - Can you work in the USA? And so on. There's so many questions that are legal to ask but for which an honest answer would reveal private information.