In addition to the point made by the sibling comment, these facts are consistent with an attack on Joe Biden for having an apparent conflict of interest, even i

In addition to the point made by the sibling comment, these facts are consistent with an attack on Joe Biden for having an apparent conflict of interest, even if there was no evidence that he intentionally, corruptly used his power to benefit his son. (If he did, would you expect there to be any evidence?) Ethical public officials are expected to avoid apparent conflicts of interest.