It's hard to deny the direct legal quotes I got (see above).

I do see your concern, and you are right to be concerned.I don't know the contingencies you have in your purchase deal, but if your deal is contingent on getting bank financing, you may be in luck. if so, I know my banker would gladly listen to a request from me to deny my loan amount for this deal.

We had tenant mail in the request for reasonable accommodation as suggested by Disability Rights nonprofit organization as they advised that if it gets denied, they have to state the reason and then we can file Fair Housing Discrimination Claim.We also don't have much resources to fight the legal battle, but we won't have any resources for discrimination claim penalties if filed by the tenant. 

Owner tried to get suit against himself, personally, dismissed, but was denied.

Can I legally deny him occupancy?

I've gotten loans that I thought there was no way i could, and I've been denied credit at other places with no explanation. 

Meaning, I cannot deny an applicant if they DO meet the income requirements simply because they are unemployed (maybe the receive disability or other income).2) For Dane county specifically they list these additional protected classes:Dane County includes all federal and state protections, plus the following: Physical Condition, Mental Illness, and HandicapType of Military DischargePhysical AppearanceGender Identity (includes transgender)Domestic Partnership StatusPolitical BeliefsStudent StatusReceipt of Rental Assistance (such as Section 8)So, you cannot deny an applicant if they look messy ...

I have been to a few meetings for my last job to get approval for certain projects and have seen many people get their projects denied. 

I walked from the deal, but even when I made a later offer and requested info of any known Chinese Drywall, they denied the property had CDW.

It shouldn't be the landlord's job to be a border patrol agent.It seems to me that the state would deny a drivers license to an illegal alien and then the landlord would have an easy time of rejecting an illegal alien if they don't have I.D.