If Kamala Harris's parents returned to India or Jamaica when she was a child, there was nothing the United States could do to stop them because they were not citizens of the United States.
A Natural Born Citizen is someone born in the United States to two parents who are United States Citizens - which is why Obama's handlers created the fake birth certificate.
It has nothing to do with parents going elsewhere at a later date. The parents could be US citizens who up and leave the country after the birth of a child. It’s totally irrelevant to the child.
The child is not responsible for what parents do after it is born. The only delineator is US jurisdiction at moment of birth. Diplomats are immune and the US has no jurisdiction over them or their children.
Born on US soil and within US jurisdiction and NBC. The debate is without any merit at all outside those two specific parameters.