> Federal law since the early 1990s requires mandatory audits for all government agencies, and since fiscal year 2013 all agencies excpet the DOD have been able to satisfy that requirement.

I guess the typo isn't important, "except". 

Being guilty myself of stupid typos it's hard for me to take seriously the critique of a trillion dollars missing. 

As the dollar supply increases so does the money that is missing which is meaningless when the denominator is arbitrary. 

Until we have a fixed supply of dollars all the models are broken. 