Well the most obvious way is if they are dumb enough to actually say so. But even without that, it's possible to recognize weasel words that people are using t

Well the most obvious way is if they are dumb enough to actually say so. But even without that, it's possible to recognize weasel words that people are using to rule them out that have more to do with skin color, nationality, or anything other than skill and personality. And even personality can be iffy, depending on what they decide isn't acceptable.