This legislative proposal aims to enhance national security by restricting military service for individuals with ties to foreign adversary nations. It specifically amends Title 10 of the United States Code to prohibit the enlistment or appointment of foreign nationals from "covered nations" into the U.S. Armed Forces, citing risks of espionage, sabotage, and undue foreign influence. The bill prevents individuals who are currently nationals of a covered nation from enlisting, and those who have been nationals of such a country within the five years prior to appointment are barred from officer positions. These new restrictions will apply to original enlistments or appointments made 180 days after the bill's enactment. Congress believes existing loyalty assessment processes are insufficient to mitigate the inherent risks posed by individuals with ties to foreign adversary governments. Additionally, the legislation mandates that the Secretary of Defense submit a report within one year, identifying current service members who are foreign nationals of covered nations, detailing their accession dates, years of service, and progress toward U.S. citizenship.