No they do not have to be born a US Citizen. They can become a citizen through the naturalization process.
By going through the process called naturalization.
In the United States, a naturalized citizen is foreign born person who has become a citizen through legal means.
Unfortunately the answer is no.Barbados only allows citizenship by descent through Parents.
Person can become a US citizen by being born to parents even if one of them is a US citizen or by birth if born in US. Another way is through the naturalization process by filing Form N-400 person can become a citizen.
You can be born in the United States and become an automatic citizen. Or you can immigrate to the United States and apply for citizenship after living in the US for seven years.
They take the citizenship test and they have to pass to become a citizen
2 years
One may become a US citizen by getting a "Green Card".
There is no minimum age limit to become a naturalized citizen of the US.
How can I become a half greek
Become naturalized