Read the Fair Housing Act. I'm not going to tell you anything other than that.
I've read the Fair Housing Act..........I know how it can be gotten around.....and at no time in my life have I ever been a landlord.
I wouldn't be one if anyone paid me to do it.
OTOH, I have been on the tenant end and so know exactly how landlords can get around it. Thankfully I haven't had to rent an apartment in over 15 years, but the last time I did the only only reason I got it was because one of my personal references happened to be the landlady's brother, a fact I didn't know at the time. She later told me she did not want to rent to a 29 year old divorced woman. And she could have easily gotten away with not renting to me.
Now, tell me something I don't know.