Look up the laws governing citizenship.
https://www.afa.net/the-stand/culture/2020/08/kamala-harris-is-not-eligible-to-be-vice-president-of-the-united-states/
From the constitution: "All persons born or naturalized in the United States, AND SUBJECT TO THE JURISDICTION THEREOF, are citizens of the United States and of the State wherein they reside."
"Sen. Harris’ father is a Jamaican national and her mother is from India, and neither was a naturalized U.S. citizen at the time of Harris' birth in 1964. In fact, neither of them was even a “lawful permanent resident” of the U.S. at the time. This means that she is not a "natural born citizen"—and therefore this also means she is ineligible for the office of vice-president."
"For example, children born in the U.S. to guest workers from Mexico during the 1920s were not regarded as citizens, nor were children born to guest workers in the bracero program of the 1950s and early 1960s."