The questions being raised about the Clinton Foundation have nothing to do with the good work the foundation does and supports. The question is whether the Clintons and her staff kept the foundation business completely separate from State Department business and it is looking more and more that they were not held separate as she signed a pledge to do when she became Secretary of State. Just like the non-disclosure agreement she signed about protecting classified material whether it is marked or unmarked.
Besides, it sounds like you are just fine with candidates meeting with the Koch brothers after they donate to that candidates campaign as well.