<ul>
<li>Lawful permanent residency </li>
<li>Attainment of the age of 18 </li>
<li>Accumulative presence and physical presence in the U.S. for a specified period of time depending on the type of application </li>
<li>Knowledge of U.S history and government</li>
<li>Proficiency in English </li>
<li>Good Moral Character </li>
</ul>