Right.
Brilliant." <<<<<
Say, fars.... here in the USA when a child is adopted, even if it's "only" by a new spouse, the original birth certificate is CHANGED and henceforth the adoptive parent shows up as the parent, NOT THE BIOLOGICAL PARENT.
Happens ALL the time, and organizations for the rights of adoptees have been trying to change the laws of all states for many decades.
You could be right IF the adoption was formalized here.
Apparently a change (the first) reportedly was made by Obama when he decided to run for President in 2008 but not exactly what it was.