US election 2020: what kind of president would Joe Biden be?

If Joe Biden is elected president this week, it will be the culmination of a career in politics that has seen successes as well as controversies. Journalist and biographer Evan Osnos examines what his past can tell us about the kind of president he could become. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>