Selective Service is required of all men in the United States. The following groups of people are exempt from the requirement to register for Selective Service.
* Lawfully admitted non-immigrant aliens (such as those men on visitor or student visas and members of diplomatic or trade missions and their families) because they are residing in this country temporarily.
* Men who are unable to register due to circumstances beyond their control, such as being hospitalized, institutionalized, or incarcerated. However, they must register within 30 days after their release.
* Members of the Armed Forces on full-time active duty. This exemption also applies to cadets and midshipmen at the United States service academies. However, upon release from active duty, a man must register within 30 days if he is not yet 26 years of age and has not already registered.