What is one promise made when becoming a United States citizen?

When becoming a United States citizen, one of the fundamental promises made is to obey the laws of the United States. This commitment signifies an acknowledgement of and respect for the legal framework of the country that citizens are now a part of. It establishes the expectation that citizens will adhere to the regulations, rights, and duties that govern society, contributing to the overall order and functioning of the nation.

Obeying the laws ensures that citizens engage in responsible behavior, uphold justice, and participate positively in their communities. This promise is essential for maintaining social cohesion and protecting the rights and freedoms of all individuals within the society. The other options, while related to citizenship, do not generally constitute a universal promise. Voting in elections is a right and privilege, not an obligation, serving in the military is optional unless there is a draft, and paying taxes is mandated but does not capture the broader commitment to all laws.