The United States is notable for an almost unique quirk of its (current) laws, which automatically grant citizenship to anybody who is born within the country. This completely regardless of the circumstances of the birth. Indeed, if for example, say, a pregnant Belgian woman just happens to be visiting the United States for a week as a tourist, and she happens to go into labor and give birth when there, the child will be automatically given US citizenship merely because of the location where the child was born, and no other reason. And, indeed, the United States is probably the only country in the world that has this quirk (or, at a minimum, is one of the extremely few that do.) Pretty much no other country in the world has this, and citizenship is not granted automatically even if you are born in the country. This is the result of the 14th Amendment to the United States Constitution, which states: "All persons born or naturalized in the United States, and subject to the jurisdic...