What is one pledge made by individuals when they become United States citizens?

One of the most significant pledges that individuals make when they become United States citizens is to renounce all allegiance to other countries. This commitment is central to the naturalization process, reflecting the idea that as citizens, individuals are expected to fully and loyally support the United States and its Constitution above any prior national loyalties. This pledge ensures a single loyalty to the U.S., which is crucial for the integrity of citizenship and unity within the nation. The act of giving up loyalty to other countries is indicative of a commitment to uphold the laws, freedoms, and responsibilities of American citizenship.