[rxsid]

The US Constitution was clearly built with the help of many sources, including Vattel's Law of Nations. Don't take my word for it, see Doctor Benjamin Franklins words on building a nation in 1775, the concepts found in the Declaration of Independence as well as in the Constitution itself (same link above).

U.S. law is our own...however, it was built from other's as well as some of the founders own ideas.

[McGavin999]

That’s fine, but you don’t use foreign sources to try to prove a point about the US Constitution. It does NOT say anything about requiring two US citizens in order to be a citizen if you are born in the US. Only if you are born in a foreign country of US parents. Rubio is a citizen.