"It can take years and years by time courts say he can be deported," said Breitbart. "A good defense lawyer will drag it out until the guy gets biological amnesty. That is, until he dies."
Despite such suspects' advanced age, Breitbart said it remains important for governments to go after them. "People need to know if you participate in a heinous crime, there is always someone looking for you."
Karkoc's case is reminiscent of that of John Demjanjuk, a Ukrainian who emigrated to Ohio after the war. Demjanjuk was accused of collaborating with the Nazis and overseeing the deaths of more than 20,000 Jews at several concentration camps including Sobibor.
After years of accusations, research, and court proceedings, Demjanjuk was finally deported to Germany in 2009. In 2011, the 91-year-old was found guilty of being an accessory to murder and sentenced to five years. He died the following year.