This bill proposes significant changes to birthright citizenship under the Immigration and Nationality Act. It clarifies that a person born in the United States is considered "subject to the jurisdiction" for citizenship purposes only if one parent is a U.S. citizen or national , a lawful permanent resident , or an alien with lawful status serving in the Armed Forces . This redefinition aims to narrow the scope of automatic citizenship for those born on U.S. soil. Additionally, the legislation introduces new grounds for inadmissibility for certain nonimmigrant aliens. Specifically, it states that any pregnant alien not married to a U.S. citizen seeking admission as a nonimmigrant will be deemed inadmissible. An important exception is made for aliens seeking legitimate medical treatment related to childbirth. These provisions, including the citizenship changes, will apply to individuals born and admission applications made on or after the bill's enactment date.