There is not a consistent type or profile of a trafficking victim. Based on U.S. federal law, trafficked persons in the U.S. can be men or women, adults or children, and foreign nationals or U.S. citizens. Some are well-educated, while others have no formal education. Some immigrant victims are currently in the U.S. legally, and others are undocumented. Some form of vulnerability tends to be the common thread amongst all different trafficking victims.