Were both his parents citizens?
Good question. If not, Ramaswamy’s just another Nikky Haley.
He was born in the US to the best of my knowledge. According to Citizenship and Immigration Services anyone born on US soil is a US citizen. We can quibble all day regarding jurisdiction but if it goes to court you can guarantee that any person born on US is soil is a citizen at birth and is therefore a natural born citizen. The child has to do nothing. He or she is a citizen with all the attendant rights and privileges. The same if a child is born outside the US to a citizen.