I also used to ask more about criminal history, before that became protected.

These are not sophisticated scams executed by criminal masterminds.

We use a combo of external and internal services.

That said, I know a few MHP operators that make some pretty tremendous money on the trailers, mostly by renting to people who need to pay in cash and have someone not ask a lot of questions - illegal/undocumented immigrants, transients, probably some criminals for sure, sometimes people (mostly women) hiding from domestic abusers, etc.

Additionally, being close to an international airport is ideal for me as I also run a small Turo business.

Very rarely do business owners inflate their numbers on tax returns vs. internally prepared or forecasted financials.

David, please talk with a lawyer about this, there may be criminal, ie SEC violations, or at least civil claim you can bring.

People from other international locals? 

I recently heard an (non-BP, don't know if I'm allowed to say where) REI podcast where the guest talked about investing in international coffee farms (in Panama).

Many will tell you they can, but despite warning them over and over in the end, won't be able to do it.Fortunately I have a great lender that I've worked with for about 20 years that handles many of my international clients.