An interview with a prospective new hire is your opportunity to discover relevant information; however, there are strict limits to what you can legally ask. While you can ask if someone is legally eligible to work for your company, you can't inquire into residency status or anything involving race, religion, family status, mental or physical health, or age. If a candidate offers information that may be a topic best avoided, do not pursue more information. For example, if they say they just recently added a child to their family, don't ask them about daycare or whether they might need time-off to accommodate their family's needs.