For families navigating the U.S. immigration process, being told that DNA testing may help establish a biological relationship can raise a lot of questions. Why is DNA testing being suggested? Is it required? Who needs to be tested? Can you order a test yourself? And what happens when one family member is outside the United States? Depending on the type and stage of the case, DNA testing may be suggested by U.S. Citizenship and Immigration Services (USCIS) or by a U.S. consul