[[ But it is relevant for finding whether Ted’s father could claim Cuban citizenship for Ted.]]
I think the courts have weighed in on this stating essentially that a child born to a US citizen- even those born on foreign soil, are the children of a sovereign us citizen-
[[Ted lost his claim to Cuban citizenship maybe when his parents claimed US citizenship for him, ]]
According to current cases, He wasn’t given citizenship by claim but rather by descent-
Technically, the legal term is by acquisition. But regardless of it being by descent, or derivative, or acquisition, what a person has at birth is a claim. In other words, "claim" is a generic umbrella term. It includes claims to US citizenship by descent.
-- I think the courts have weighed in on this stating essentially that a child born to a US citizen- even those born on foreign soil, are the children of a sovereign us citizen --
Read the cases. I have. Some children born abroad of US citizen parent or parents are NOT US citizens.
All of the courts find that a child born abroad is first (or presumed) an alien, and then, if the circumstances of birth meet the requirements set forth in a naturalization statute, a naturalized citizen.