it's all about the ratio, isn't it... let's face it, white dudes don't create problems NEARLY as much or at the same rate, then you combine this undeniable fact with the majority of the customers likely being white and it makes literally no sense for them to have that clause.... and if they did, NO ONE WOULD CARE, by the way...
so, no AA is completely justifiable as far as policies for hookers go, and the other one, is NOT.... while, again, it is still permissible...and no one would give a fuck (me included)