Answer: No, Sammy doesn't have to get naturalized. This is because he is younger than 18 years as he was 12 years when his parents were naturalized
Explanation:
Naturalization is the legal act whereby someone who is a non-citizen of a particular country gets the citizenship of that country after the person has met the necessary requirements put in place by the law of that country.
For example, to obtain naturalization in the United States, one will have to meet the necessary requirements which are already put in place by the Congress and are being embedded in the Immigration and Nationality Act.
In the scenario in the question, Sammy doesn't have to get naturalized. This is because he is younger than 18 years as he was 12 years when his parents were naturalized.