Biden and wife made more than $15 million after leaving office

Former U.S. Vice President Joe Biden and his wife, Jill, earned more than $15 million in the two years after Biden left government in early 2017, according to tax records released by his campaign on Tuesday.The majority of their income came from speaking engagements and payments for two books written by Biden, a top contender for the 2020 Democratic presidential nomination.Biden earned more than $775,000 in salary as a professor at the University of Pennsylvania in 2017 and 2018.