Howard Hughes Medical Institute - In 1969, Representative Wright Patman "complained that the Hughes foundation was a tax‐evasion device," noting that the institute spent only $5.7 million for its operations between 1954 and 1961, a period during which Hughes Aircraft accumulated $76.9 million in profits. By 1975, it had also avoided certain stipulations of the 1969 reform act for charitable institutions due to legal filings by Hughes to change its operational status, with his objections going directly to the White House.

https://en.wikipedia.org/wiki/Howard_Hughes_Medical_Institut...

It seem like a good loophole for the rich to have control on where their charitable money goes to and do what. you can argue the Gates foundation is the same but Bill Gates actually doing some goods with his charitable organization like someone else said, if the charity is being use like a little piggy bank for the rich then its a crime.