According the the U. S. Citizenship and Immigration Services website USCIS.gov, the following must be true to be a citizen at birth.  “To become a citizen at birth, you must: Have been born in the United States or certain territories or outlying possessions of the United States, and subject to the jurisdiction of the United States; OR had a parent or parents who were citizens at the time of your birth (if you were born abroad) and meet other requirements” How do anchor babies meet this requirement? If neither parent is a U. S. Citizen, are they subject to the jurisdiction of the United Stares, except to obey law while in this country?