According to the principle of jus sanguinis, who is granted US citizenship?

The principle of jus sanguinis, which translates to "right of blood," establishes that citizenship is granted based on the nationality or citizenship of one's parents rather than the location of birth. Under this principle, an individual is granted US citizenship if they are born to at least one US citizen parent, regardless of where the birth occurs.

The first choice states that a child born to two US citizens is granted US citizenship, which aligns perfectly with the jus sanguinis principle. This means that citizenship is passed down from the parents to the child, reinforcing the idea that lineage plays a crucial role in citizenship rights.

In contrast, the other options do not accurately reflect the principle of jus sanguinis in terms of citizenship eligibility. For instance, being born in Canada or Mexico does not automatically confer US citizenship if the parents are not US citizens. Similarly, being born in a country allied with the US doesn't influence citizenship status unless one or both parents are US citizens. The principle emphasizes parentage over place of birth, making the first option the clear representation of jus sanguinis in the context of US citizenship.