Borderline sexual harassment of your sister if you consider the casual calls he makes to her in all honesty.

I once rented an apartment to a guy who spent 25 years in prison for aggravated sexual assault.

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She could sue for sexual harassment, also get someone in jail on rape/ sexual harassment charges.  

Currently 'Letters From A Stoic' by Seneca Recently 'The (Mis) Behavior of Markets' by Benoit Mandelbrot, 'Keynes Way To Wealth' by John Wasik, 'The Signal and The Noise' by Nate Silver.

Criminal records must contain no convictions for misdemeanors for crimes involving violence, assault or battery, drugs, firearms; felonies within the past seven years and no sexual offenses ever.

The tenant screening should include a full credit check, criminal background check for felony at the state and federal level, homeland security check and sexual predator check.  

The Landlord-Tenant Act forbids landlords from terminating a tenancy, failing to renew a tenancy, or refusing to enter into a rental agreement because of a tenant’s status as a survivor of domestic violence, sexual assault, stalking or unlawful harassment, or based on a tenant having terminated a rental agreement because of a similar incident."

However, fair housing laws as interpreted by the California courts make the process a little more complicated.Fair Housing FoulThe Unruh Civil Rights Act and the California Fair Employment and Housing Act prevent landlords from discriminating between would-be tenants on the grounds of their sex, race, color, religion, sexual orientation, marital status, ancestry, national origin, source of income, disability or medical condition.

I don't care if they are bartenders (have that) or are of a different sexual orientation (have that) or any other protected class.