Enemy alien

Legal status of persons
Birthright
Birthplace Aboard aircraft and ships Jus sanguinis Jus soli Birth tourism
Nationality
Citizenship missing multiple transnational Naturalization Ius Doni Oath Test Law Lost citizenship denaturalized renounced
Immigration
Alien Enemy Criminalization of migration Diplomatic protection Illegal Law Permanent residency Refugee Right to homeland Voluntary return Identity cleansing Right of return
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In customary international law, an enemy alien is any native, citizen, denizen or subject of any foreign nation or government with which a domestic nation or government is in conflict and who is liable to be apprehended, restrained, secured and removed. Usually, the countries are in a state of declared war.