Why is Vivek Murthy misleading us about his background?

Vivek Murthy has been nominated to the top medical post in the US by the Biden-Harris team. Here is an extract from a statement released by him upon his nomination. “I will dedicate myself to caring for every American, driven always by science and facts, by head and heart- and endlessly grateful to serve one of the few countries in the world where the grandson of a poor farmer in India can be asked by the president-elect to look out for the health of the entire nation.”