Their IRS determination letter says they are formed as a public charity and their 990s claim that they have met the "public support" test as a public charity.

Their IRS determination letter says they are formed as a public charity and their 990s claim that they have met the "public support" test as a public charity. But there are some questions since over half of their support ($70 million) is identified as "other income" without the required explanation as to the "nature and source" of that income. Would not pass an IRS audit.