The United States of America is currently one of the only countries in the world that grants citizenship to all those born on its territory. Thus, everyone who is born or was born in the United States (with the sole exception of children born to third-country diplomatic parents) is an American citizen.

Therefore, if a Greek woman travels to the US on a tourist visa or visa-waiver or any other way and gives birth during her visit, the child born will automatically be a US citizen. This does not, of course, mean that the child’s parents will acquire any right to remain in the US – the parents of a US citizen only acquire US immigration rights when the child turns 21, and that is subject to conditions.

There are also several practical problems when a foreign woman comes to the US with the intention of giving birth. Border Patrol agents generally do not look favorably on foreigners who come to the U.S. with the intention of giving birth and are likely to deny entry into the country to anyone who comes with such intentions. Finally, giving birth in the US comes at a large and significant cost – and in the event that a C-section is needed, the cost can be more than $20,000.