The first thing is to not escalate a situation. They should be calm and be polite. They need to understand they don't have to answer questions. They have a right to remain silent. If they're asking about us citizenship or where they were born they don't have to answer that. They need to be very careful of signing anything. You can make admission that are not in your interest. They should contact a lawyer, so remain silent, don't answer questions you think may lead to more difficulty for you. don't sign anything unless you have had it translated, you're sure it's okay. In particular, you do not want to agree to voluntary departure or consent to your removal from this country. So be smart, be cool and have an attorney help you.