Joseph R. Biden Jr. picked Senator Kamala Harris of California as his running mate, making her the first Black woman and the first Asian American woman to run for vice president on a major party ticket. Alexander Burns, a national political correspondent for The New York Times, shares his thoughts on the decision. For more information on today’s episode, visit nytimes.com/thedaily  Background reading: Joe Biden selected Kamala Harris as his vice-presidential running mate on Tuesday. She will be the first is the first Black woman and the first person of Indian descent to be nominated for the office by a major party.The selection of Ms. Harris was conventional by some political standards, and groundbreaking in others. Democrats hope that having her on the ticket will attract moderates and Black voters in swing states.Here’s what you should know about the California senator and her stances on key policy issues.