“My cousin had put a picture on Facebook that said, "I will not be forced to learn a foreign language to accommodate illegals in my country."… …How do I politely tell them they are wrong with their way of thinking?”
The answer is simple really… they don’t need to change their way of thinking because they are “RIGHT!” You see the key word here is “ILLEGALS.” Unlike Mexico... America is a nation of law and to accommodate or support anything “ILLEGAL” is counter productive, up to and including speaking a third world language in order to facilitate an individual's efforts to perpetrate their “ILLEGAL” activity. Your problem is you define right and wrong by race (e.g. your own racism). Right and wrong are defined by law. Since you are the one in the wrong you should change your thinking and stop pandering to the criminal constituency!