Jamaica and India are sovereign countries.
Their citizens are not Americans.
She was born an Indian/Jamaican/American, not a natural born citizen.
You do know that “America” includes North America, Central America, South America, the Caribbean, the Gulf of Mexico, and parts of the South Atlantic and South Pacific, right?
Kamala Harris’s parents were not native-born citizens of the United States. Whether they were naturalized citizens at the time she was born is not a fact I have yet seen. I looked them up and found that both arrived in the U.S. only two to three years before their daughter was born. Had they become citizens before her birth? Don’t know.