Editing Selective Service System (section)

==Alien or dual-national registrant status==
Some registrants are not U.S. citizens, or have dual nationality of the U.S. and another country; they fall instead into one of the following categories:
* '''Alien or Dual National (class 4-C):''' An alien is a person who is not a citizen of the United States. A dual national is a person who is a citizen of the United States and another country. They are defined in four classes.
** Registrants who have lived in the United States for less than a year are exempt from military training and service,  but become eligible after a year of cumulative residence (counting disjoint time periods).
** A registrant who left the United States before his Order to Report for Induction was issued and whose order has not been canceled. He may be classified in Class 4-C only for the period he resides outside of the United States. Upon his return to the United States, he must report the date of return and his current address to the Selective Service Area Office.
** A registrant who registered at a time required by Selective Service law and thereafter acquired status within one of its groups of persons exempt from registration. He will be eligible for this class only during the period of his exempt status. To support this claim, the registrant must submit documentation from the diplomatic agency of the country of which he is a subject verifying his exempt status.
** A registrant, lawfully admitted for permanent residence, as defined in Paragraph (2) of Section 101(a) of the [[Immigration and Nationality Act of 1952]], as amended (66 Stat. 163, 8 U.S.C. 1101) who, by reason of their occupational status, is subject to adjustment to non-immigrant status under paragraph (15)(A), (15)(E), or (15)(G) or section 101(a). In this case, the person must also have executed a waiver of all rights, privileges, exemptions, and immunities which would otherwise accrue to him as a result of his occupational status.
* '''Dual national:''' The person is a citizen of both the United States and another country at the same time. The country must be one that allows its citizens [[United States nationality law#Dual citizenship|dual citizenship]] and the registrant must be able to obtain and produce the proper papers to affirm this status.<ref>{{cite web |url = https://www.sss.gov/regisrantsbk.htm#%28Class%204-C%29 |title = (Class 4-C) Selective Service System: Information for Registrants Booklet |publisher = Sss.gov |access-date = 8 April 2011 |archive-date = 20 June 2015 |archive-url = https://web.archive.org/web/20150620174519/http://www.sss.gov/regisrantsbk.htm#%28Class%204-C%29 |url-status = dead }}</ref>
* '''Treaty alien:''' Due to a treaty or international arrangement with the alien's country of origin, the registrant can choose to be ineligible for military training and service in the armed forces of the United States. However, once this exemption is taken, he can never apply for U.S. citizenship and may become inadmissible to reenter the U.S. after leaving<ref>{{cite web |url = http://www.sss.gov/FSaliens.htm |title = Selective Service System: Aliens and Dual Nationals |publisher = Sss.gov |access-date = 8 April 2011 |archive-date = 7 June 2015 |archive-url = https://web.archive.org/web/20150607011659/http://www.sss.gov/FSaliens.htm |url-status = dead }}</ref> unless he already served in the Armed Forces of a foreign country of which the alien was a national.<ref>{{USC|8|1426}}</ref> Nevertheless, an alien who establishes clear and convincing evidence of certain factors{{which|date=March 2019}} may still override this kind of bar to naturalization.