How many of the Pilgrims had a valid modern visa?
US also didn't have Jus soli citizenship until the whole civil war and slavery debacle. You had to go into a local court and show you lived in the US for a couple years, who would swear you in as a citizen. But most people didn't care about voting or holding office enough to bother.
Actually, my understanding is that the US did largely follow jus soli. What it wasn't was unconditional jus soli, but the principle was birth in the bounds of the US conferred citizenship except if positive law existed not conferring citizenship.
As I said above, a law you have to tie yourself in knots to justify might be a bad law.
> If you have to work your way round to "they are not people" for the law to be consistent, consider that it might be a bad law.
I disagree that the law (which has been changed, amended and clarified) has been 'consistently obvious', and I still maintain that the conclusion of 'immigrants aren't people' invalidates the law.