This is not particularly hard. The "family member of politician" potential conflict comes up in almost every administration.
Jimmy Carter's brother Billy, who famously had substance abuse issues and was an alcoholic, had an arrangement with Libya. (
https://www.nytimes.com/1988/09/26/...er-at-51-troubled-brother-of-a-president.html)
George W. Bush's brother Neil had some deposition testimony in which it was pretty clear he slept with tons of prostitutes in Asian countries, and parlayed his family name into a board position with a Chinese Semi-conductor company. (
https://www.washingtonpost.com/arch...il-bush/388db316-f6b9-456e-8720-b4b2bf60a8ab/)
Bill Clinton had Roger Clinton (cocaine). Hillary's brothers got involved in tobacco lobbying. (
https://www.nytimes.com/2001/02/23/...rge-unflattering-spotlight.html?module=inline)
Honestly, Hunter Biden doesn't register by comparison. If you really think that corporate boards don't have people with drug arrests in their seats .... I don't know what to tell you.