Really minor note: You mentioned Biden using his power to help his sons. Biden has three adult children (He had a daughter who died in the same car accident his wife died in, in the 70s, when the daughter was about one year old; I'm not counting her). Of these three children, there are daughter Ashley (who has led a relatively boring life, other than having her diary at some point stolen by some people), and two sons, Beau and Hunter. These are the sons you'd have referred to.
Now, Hunter is a scumbag, and Biden did way too much to help him (including that pardon, though by Trump standards that was pretty mild). Beau, on the other hand, was a pretty respectable politician with nary a scandal attached to him, who sadly died way too young at 46 in 2015 (way before Biden became President, obviously).
So it's more how Biden helped his son (singular) than sons (plural).