This says I am a "consumer." Well, beware jail-hiouse lawyers... But all the same, I am trained in some law; but far more critically, trained in discernment. In addition, having thje need, I've just researched a nearly similar issue. The bottom line is that many of these laws have been repealed or "adjusted" many times in bery recent years.
Discrimination must be for cause. It must not violate certtain issues/persons. And it must not be personal. Were he to fear health or harm from you, he may have cause. He has easier venues to dissuade you, than this ill-concieved attempt. A cop would liekly back him up for the sake of peace, fearing his reprisal against you, were you to be allowed in. But in court, he would lose. My basis may be tilted a bit towards CA law, but most fed law is similar.