Is Usha Vance’s Hindu identity an asset or a liability to the Trump-Vance campaign?

Usha Chilukuri Vance loves her “meat and potatoes” husband, JD Vance. She explained to a rapt Republican National Convention audience how their vice-presidential candidate adapted to her vegetarian diet and even learned to cook Indian food from her immigrant mother.

That image of her white, Christian husband making the spicy cuisine of her parents’ native state in South India is atypical for the leaders of a party whose members are still largely white and Christian. Her presence at the...