I explained that the new roommate would have to apply ($30) as we needed to do a criminal background check.  

I am seeking  advise of accountant familiar with foreign income tax in US real estate and have following questions:Which expenses I can claim for income tax during flipping(for instance whether international travel cost and accommodation cost  during acquire, rehab, and selling property can be claimed )How to reduce income tax during closing ( instead of paying 15% of gross sale price I would like to pay actual tax liability which is by far less )Apply for tax certificate or affidavit to reduce tax liability to actual amount

Saw the documents in the house that this person is a criminal, has been in Jail in Louisiana and has been doing illegal business and sale stolen cars. 

I am seeking advise of accountant familiar with foreign income tax in US real estate and have following questions:Which expenses I can claim for income tax during flipping(for instance whether international travel cost and accommodation cost during acquire, rehab, and selling property can be claimed )How to reduce income tax during closing ( instead of paying 15% of gross sale price I would like to pay actual tax liability which is by far less )Apply for tax certificate or affidavit to reduce tax liability to actual amount

Experience in international real estate transactions, capital markets, FOREX, commercial real estate (NYC) ,real estate investment (TX & NY), residential real estate (Brazil & NYC).

Be sure to look at past evictions, credit, and criminal for every applicant.  

That's an excellent question that you need a local real estate lawyer (not a divorce lawyer, not a criminal defense lawyer, a real estate lawyer) to answer after they have reviewed the contract.

In America, small business is being increasingly looked upon as a criminal behavior by both the public and governments and our society is extremely litigious. 

We just did the research on these new HUD guidelines the other day and here's a snippet of the larger article:What HUD’s new Guidance means for housing providers:Arrests records are not a valid reason to deny a rental applicant housing.Convicted criminals may be denied housing if the reason for their convictions clearly demonstrates that the safety of your residents and/or property are at risk.Blanket terms in your screening criteria that say “Any criminal convictions will be denied” are now considered discriminatory and in violation of the Fair Housing Act.The new Guidance does not make criminals a protected class, but rather establishes requirements to clearly prove why you are denying an applicant based on a criminal conviction.Remember that a housing provider violates the Fair Housing Act when the provider’s policy or practice has an unjustified discriminatory effect, even when the provider had no intent to discriminate.source and full article

But you are still gambling on the criminal aspect if you can't find a resource from their country.