through his connections
A new book chronicling Joe Biden's corruption comes out within the week.
"The Biden family’s apparent self-enrichment involves no less than five family members: Joe’s son Hunter, son-in-law Howard, brothers James and Frank, and sister Valerie."
https://nypost.com/2020/01/18/how-five-members-of-joe-bidens-family-got-rich-through-his-connections/