This is what I read, too. (IANAL) The constitution and 14th especially say nothing about children born abroad to citizens. (After all, it was designed mainly to define ex-slaves as the equivalent of all other citizens). Therefore congress has the right to confer citizenship above and beyond what the constitution says about “born here, subject to jurisdiction; or naturalized”; presumably they can also set the conditions as to what is required to obtain naturalization - but once an import properly acquires citizenship, their status is subject to the same rules as a natural-born citizen.
At this point I wouldn’t be surprised if someone tried to shoehorn-in a scenario like "But what if both parents are Americans…but she has to give an emergency birth while taking a sightseeing tour at the Latverian Embassy?
Which opens up a whole side discussion on the status of embassy grounds…
What if the baby’s almost all out except the left leg when the ambulance exits the front gates? Does that mean that child can be deported, but first his leg has to be amputated?
What if it’s a breech birth while the ambulance exits. Then at cocktail parties as a grown-up, he can mention “Did you know I have a Latervian ass? True story…”
Common misconception (ha!) but there is no confusion here. US Embassies have no impact on citizenship. For these purposes, a US Embassy is foreign soil and doesn’t convey jus soli.
