Joe Biden, the 47th U.S. vice president and former Delaware senator, launched his 2020 presidential campaign last week in a crowded Democratic field after months of uncertainty and speculation. This is Biden's third run for the highest office in the land. The career politician who devoted close to 50 years of his life to service is positioning himself as a leader who can unite a deeply divided America and serve as an antidote to Trump and populism. If elected, Biden would be the oldest president in U.S. history. As a Democratic elder statesman, his personal life, touched by tragedy, has been covered extensively. More recently he's come under criticism for his handling of the Anita Hill testimony in 1991 and by women accusing him of inappropriate behavior. Get to know the candidate, his stance on the issues and more about what's led to the recent controversies.