Sampson was supposed to have killed a thousand men with the jawbone of an ass. I'm not sure that's enough to qualify one as a Republican candidate. Candidate Jeb may have been trying to outdo Candidate Donald with reference to "Anchor Babies" a pejorative slur intended to make you believe illegal immigrants could anchor themselves in the White Man's Land by taking advantage of the 14th amendment. Sneak across the border, have a baby in an American hospital and not only will the overtaxed millions have to foot the bill, but you get to stay here because your baby anchors you.
Sorry, it doesn't work that way, not for those scary, disease infested, drug carrying rapists Trump talks about and not for the Chinese women who booked hotel rooms in California so their babies would be born here as Jeb insists he's talking about. It's true that any children would automatically be eligible for citizenship, but hey can't petition for residency on their parent's behalf until they are 21 years old. So while you may be giving him a nice coming of age present, you'll have to go home, all of you.
And when you do decide in 2036 or so to claim your citizenship, you may run afoul of the FATCA act which could make you liable for back taxes on anything you earned back in Guadalajara or Shanghai plus penalties for not filing and filing late and of course if it says "born in the USA" on your passport, you can't open a bank account at home, even if you're a dual citizen. Personally I would keep it quiet and stay home.
But you didn't actually think you'd get the facts from a Republican, did you -- jawbone of an ass and all that?