An immigrant can become a us citizen through a process called emigration. naturalization. registration. residency.

The answer is: Naturalization

The U.S. naturalization process is the process which grants U.S. citizenship (and all its benefits) to foreign or national that fulfills all the requirements.

There are several requirements which could variate for each people depending on his/her situation, four of the main requirements to apply for the U.S. citizenship are:

- For US citizen spouses: Who wants to apply for the U.S .citizenship must be a permanent resident for at least 3 years and meet all the eligibility requirements to apply as a U.S. citizen spouse.

- Being a permanent resident for at least 5 years and fulfill all the eligibility requirements.

- Having qualifying services in the U.S. armed force and fulfill all the eligibility requirements.

- For childs, they can apply if his/her parents are U.S citizen and they are born, residing and living outside the U.S. and meeting all the eligibility requirements.

Have a nice day!