Before or after he was born? That's the critical point.
If he was born after, then he is eligible, for he's then considered to be a NBC.
If he was born before, he was a naturalized at the same time as his parents were naturalized, thus, not a NBC.
NBC - Natural Born Citizen.
But some people say if you never needed to be naturalized,that makes you a natural born citizen.
Vivek was never naturalized because he was a citizen by birth. He was not naturalized along with his parents because he was already a citizen.
And according to some people that makes him a natural born citizen because he was born in America. Others disagree.