You really don't need a "high level consultant"
All you need is a kid out of university with about 5 years experience who can put together a system for tracking costs.
Safe to say that there is no such person on this reservation and never will be.
They can send a kid out school up there who thinks that it will be an adventure (and maybe it will be) and he will do more in 6 months to straighten that place out than all the natives combined have done in 60 years.
The only problem will be that the natives won't let him do his job because they don't want the government to kow where the money is going and his very safety may be in peril.
If that's all that was needed, why wasn't it done six years ago, and every year since? And why did the government commit to a $1300 a day consultant instead?
If that's all that was needed.
There may well be misappropriation, but since the feds seem to have only just now thought of the idea of an auditor for their much ballyhooed $90,000,000 no one can say. Not even wise folks like you, unless you've got personal experience you haven't shared yet.
The one thing that should be clear to all is that spread over six years and divided among 2300 folks, $90,000,000 doesn't buy bvery much at all in the way of municipal-type services, like sanitation and water, let alone provide for anything significant in the way of housing maintenence, or services like heat and hydro.
Ooops I forgot. No hydro, diesel generators, and not running on locally-harvested bio-diesel neither.
I'm quite sure the residents were the authors of many of their own misfortunes, but I am equally sure the feds did as little as they could get away with in terms of keeping the community out of trouble or helping them secure a better future. The fact they decided they had to hire their third-party manager—without consulting the people—simply to find out what's going on speaks volumes.
Don't we pay them to know?