This is the weirdest part about Republican attacks on Biden's ethics or integrity. All that I have seen have been accusing Biden or his family of things that Trump and his family do much more often than the Biden's are alleged to have done them.
In a rational world, that kind of attack would totally backfire.
But it's pretty clear people aren't rational. I've had people tell me that Trump must be trustworthy because he's a billionaire, and had the same people tell me that Gates, Soros, Buffett, and Bezos cannot be trusted because they are billionaires. Huh!?