Supremes: Having Mexican mom, U.S. dad not citizenship...Flores-Villar was born in Mexico to an American father and Mexican mother. The couple never married and the child was brought to the San Diego, CA area at age two and raised by his father and grandmother, both U.S. citizens. As an adult he was convicted of smuggling marijuana and illegal entry, and after a prison term he was deported to Tijuana. The man tried to avoid deportation by claiming he was a U.S. citizen. The case turned on a federal five-year residence requirement, after the age of 14, on U.S. male citizen fathers -- but not on U.S. citizen mothers -- before they may transmit citizenship to a child born out of wedlock abroad to a non-citizen.