Pew says 9% of kids are born to illegal or temporary immigrants.
If the 14th amendment says they’re all citizens, that’s what it says. But that’s a pretty crazy policy outcome, imo!
I don't really have a strong opinion on the meaning of the 14th amendment, but it seems to me hard to come up with a policy justification for jus soli, especially expansive jus soli, in the 21st century.