Oh yes it is; since YOU chose to talk about your CRIMINAL family members, it's EVERYONE else's business!
And don't you dare try to claim that they "aren't doing any harm" by being here ILLEGALLY; they are!
You need to do some research. It isn't a crime for unlawful presence. There is no USC for that, it falls under immigration law, which is a civil issue.
Improper entry is a crime, which doesn't apply.
Before you pop off at the mouth know your subject matter.