CLEVELAND, Ohio — The U.S. Justice Department’s top Nazi hunter said Friday that his office’s mission has evolved, but its goal remains the same — making sure those who persecute others abroad cannot live peacefully here. “This country has a proud history of offering haven to the oppressed, not sanctuary to the oppressors,” Eli Rosenbaum said in a speech to the City Club.Rosenbaum, the director of the Human Rights Enforcement Strategy and Policy in the Human Rights and Special Prosecution Section, and his staff of attorneys has stripped the citizenships of 107 suspected Nazi collaborators. That includes about a dozen from Northeast Ohio.As the years pass and suspected collaborators die off, the number of Nazi cases has dropped off. Rosenbaum’s office has continued its mission by prosecuting modern human rights cases.He focused on Nazi war criminals Friday. Rosenbaum spoke about the 34-year legal saga of John Demjanjuk, who was convicted last month in Germany of 28,000 charges of accessory to murder in the deaths at the Sobibor death camp. He was sentenced to five years in prison; he is free, pending appeal. Demjanjuk has denied the allegations.The charges stem from a Cleveland citizenship case in 2001 brought by Rosenbaum’s office. The prosecutor said Demjanjuk “has tried to make a mockery of the judicial processes in both the United States and Germany.”He said photos of Demjanjuk at his trial in Munich showed a man who appeared in pain.Rosenbaum contrasted those images with recent photos in the German newspaper Bild, which showed the 91-year-old Demjanjuk walking without a cane outside the nursing home where he lives. Demjanjuk’s son, John Jr., criticized the paper.”Since coming to Germany and before, my father has been able to walk short distances on good days while on other days, he is confined to bed,” the younger Demjanjuk told the Associated Press.Rosenbaum also debunked the latest controversy over a Nazi guard pass linked to Demjanjuk. For years, Demjanjuk’s supporters have said the pass was a KGB forgery, despite tests that showed otherwise.The controversy came up again in April, when the Associated Press uncovered a declassified memo written by a Cleveland FBI agent in 1985. The agent wrote the guard pass could be a type of document that “was quite likely fabricated by the KGB.”Rosenbaum said it was merely speculation by the FBI agent. Jerome Brentar, a travel agent who had helped Demjanjuk’s defense in the 1980s, spoke to the agent who wrote the report and suggested the likelihood of Soviet misconduct in the Nazi cases. Rosenbaum said Brentar, who died in 2006, was a Holocaust denier.