How common is giving birth in the US as a tourist?

My mother was on a multiply entry tourist visa. She purposely used it to give birth to me in NY. That's her favorite state and she wanted me to be born there. She had that well calculated. She doesn't regret and feels she didn't break any law nor did anything wrong.

Eventually she got a work visa, then applied for a Green card and has been a citizen for the longest by now.

How common is using a tourist visa or any other to give birth in the US?

How common is giving birth in the US as a tourist?
Post Opinion