Fedorenko v. United States, , was a United States Supreme Court case which held that people who assisted in Nazi persecutions, whether voluntarily or involuntarily, were not eligible for visas

Visa (document)

A visa is a document showing that a person is authorized to enter the territory for which it was issued, subject to permission of an immigration official at the time of actual entry. The authorization may be a document, but more commonly it is a stamp endorsed in the applicant's passport...

 to enter the United States, and thus could not legally obtain United States citizenship. It has been used as an important precedent in many denaturalization cases against former Nazis.

See also

• Chaunt v. United States,
• Rogers v. Bellei
  Rogers v. Bellei
  Rogers v. Bellei, , was a decision by the United States Supreme Court, which held that an individual who received an automatic congressional grant of citizenship at birth, but who was born outside the United States, may lose his citizenship for failure to fulfill any reasonable residence...
  
  ,
• Kungys v. United States,
• Negusie v. Holder,
• Boļeslavs Maikovskis
  Boļeslavs Maikovskis
  Boļeslavs Maikovskis was a Latvian Nazi collaborator who served as chief of police for the second precinct of Rēzekne while the Germans occupied Latvia in World War II.After the war Maikovskis went to Austria....
  
  , Latvian Nazi collaborator, fled the U.S. before his extradition
• Anton Geiser
  Anton Geiser
  Anton Geiser is a retired steel worker and former United States citizen who, as a member of the SS-Totenkopfverbände during World War II, served as a guard at both the Sachsenhausen and Buchenwald concentration camps. In 1956 he moved to the US, settling in Sharon, Pennsylvania, where he had...
  
  , who lost his US citizenship for similar reasons, this case having played an important part in the process