Final answer:
The babies born at Point D would be native U.S. citizens by the law of the soil or the law of the blood, depending on the citizenship status of the parents.
Step-by-step explanation:
The babies born at Point D would be native U.S. citizens by the law of the soil, also known as jus soli. According to the Fourteenth Amendment, any child born in the United States is automatically a U.S. citizen, regardless of the citizenship status of their parents. The concept of jus sanguinis, or the law of the blood, which means a child inherits the citizenship of its parents, also applies. So, if the babies' parents are U.S. citizens, the babies would have U.S. citizenship.