"Some mothers get temporary visas specifically to secure U.S. citizenship for their newborns. These mothers are sometimes called “birth tourists.” Such births would be part of about 9,000 births in 2023 to mothers who were residents of foreign countries, according to official birth registration data from National Center for Health Statistics (NCHS). These births are not counted as part of the 20,000 births to mothers with legal temporary status in 2023."