That's the "everybody does it" defense. But there really is no evidence that everybody does do it. Clinton's position is unique in that she helps run a multi-billion-dollar family foundation and was soliciting contributions for it from the same international sources that she dealt with officially as SecState, and at the same time that her former president hubby was soliciting tens of millions of dollars in payments for personal services. At times, her closest advisors at State were also on the foundation payroll. The lines between her official business, foundation business, hubby's personal business and her personal business are vague and gray -- when they can be discerned at all.
Clinton is better than Trump. Clinton will always be better than Trump. But that doesn't mean that her conduct has been above reproach, or that legitimate questions can't be raised.