歧不歧视不是他说了算，放心没有法律效力。你写个email存档，reiterate my reason for rejec

rejecting application was that my apartment did not meet the minimum qualification requirements for section 8 Client. It was absolutely not because of a double standard for different categry of clients.  My company follows all laws and regulations of equal treatment for all people regardless of countries of origin. It is our guiding principle to serve diverse clients of our city. 
切，把大话扔过去，留底。谁怕谁啊。