理论上是要修宪，但也不是绝对的，在特定情况下，至少来这边旅游生下来的如果要搞的话打官司也难说

Section 1. All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.

The court's dissenters argued that being subject to the jurisdiction of the United States meant not being subject to any foreign power—that is, not being claimed as a citizen by another country via jus sanguinis (inheriting citizenship from a parent)—an interpretation which, in the minority's view, would have excluded "the children of foreigners, happening to be born to them while passing through the country".

https://en.wikipedia.org/wiki/United_States_v._Wong_Kim_Ark