i've been at my job 9 years and recently my son and niece were hired for differant shift then i and when my

brother applied he was told that there cant be too much family working at a company ,but yet he the supervisor has 6 or more relatives working there all fromel salvador dont know a word of english and thats ok .and he told my brother once that he was going to hire him now he changed his mind is that discrimination ?should i talk to the higher up .any suggestions?