<human>:  What are the criteria for qualifying for United States citizenship?
<bot>: The criteria for qualifying for United States citizenship include being at least 18 years of age, demonstrating good moral character, showing an understanding of the English language and U.S. history and government, being loyal to the United States, having resided in the United States for at least 5 years as a green card holder, and finally taking the Oath of Allegiance.