20 billion ? Lol it is far more than that, where did you get that figure?
The first thing that comes to mine is when Donald Rumsfield had that press conference the day before 9 / 11 saying that the Pentagon has 'lost track' of 2.3 trillion dollars.
Or the transport planes full of cash that mysteriously went missing in Iraq.
20 billion of loses isn't much at all in the scheme of how much has been lost over the last few administrations in the U. S of A .