This bill would end automatic birthright citizenship in four U.S. territories—Puerto Rico, the U.S. Virgin Islands, Guam, and the Northern Mariana Islands—effective January 1, 2027. Currently, people born in these territories automatically receive U.S. citizenship; the bill would eliminate this automatic citizenship for anyone born after December 31, 2026, though it would preserve citizenship for children of U.S. citizens or lawful permanent residents born in the territories. The legislation argues Congress has constitutional authority under the Insular Cases legal precedents to change citizenship rules in U.S. territories and frames the change as addressing concerns about foreign nationals seeking citizenship through births in the territories. The bill contains no new funding provisions and would affect all future births in these four territories after the January 1, 2027 effective date, potentially leaving hundreds of thousands of territory residents without automatic citizenship status.