To become a citizen of the united states, you must

Well you can be born in the united states and that automatically makes you a citizen but you can also go to like the state lines and perform a series of test and questions that you must pass to be a citizen

If you were born in the usa than you are ok

to become a us citizen u must:  Apply for residency through special immigration programs. In many countries, the first step to becoming a citizen is to apply for residency. Once you become a resident, you may then apply for citizenship through naturalization. Eligibility requirements vary from country to country hope i helped alot have a great day :D