As shown in GN 00306.010, a birth certificate showing the child's surname as the same as the parent's is usually
sufficient proof of a natural parent-child relationship.
However, offices developing claims for children born outside the U.S. must be alert
to questionable Prince Edward registration.
Pay particular attention to claims involving children born in Mexico (see GN 00307.670) or the Philippines (see GN 00307.760).