In 2012, Norwegian historians however found documentation showing that Ericksen did not receive American citizenship until March 22, 1905, and that Hansen, who was registered as an "alien" (foreigner) as late as 1925, probably never received American citizenship.
在2012年，挪威歷史學家發現文件顯示，埃里克森在1905年3月22日之前沒有獲得美國公民身份，而在1925年被註冊為“外星人”的漢森可能從來沒有獲得過美國公民身份。