It has been clear to every single human being reading it for hundreds of years. It was never up to debate until some person of this administration decided to go and question the meaning of "jurisdiction thereof". Also saying that a foreign-born person isn't subject to the jurisdiction of the country they find themselves in opens a massive can of worms - like, if the State doesn't have jurisdiction over foreign nationals, does it imply it's not legally allowed to arrest them for instance? Two can play the same game and find infinite loopholes even in the clearest of texts.

This goes beyond the value of citizenship by birth, which I'm neither in favour nor against (personally I think that just sanguinis is nonsensical, but so is to automatically give citizenship even to accidental passer-bys), it's all about whether the law still carries any "evident" meaning or whether it can be spun around depending on political necessity, which is bad