[throwaway_e66m]

There are perhaps other ways, too.

Why Did the Saudi Regime and Other Gulf Tyrannies Donate Millions to the Clinton Foundation? http://theintercept.com/2016/08/25/why-did-the-saudi-regime-...

Clinton's foundation got millions from Saudis, Gates: https://www.cnn.com/2008/POLITICS/12/18/clinton.donations/

[ceejayoz]

I have little doubt there are many ways. These are a bit harder to directly pull a billion dollars out of, though.