Nazis in Minnesota?

Daniel Politi has a Slate article about an unlikely criminal in an unlikely place:

A 94-year-old man who has been in the United States for more than sixty years was a top commander in a Nazi SS-led unit, the Associated Press revealed recently. Michael Karkoc now lives in Minnesota and, when he entered the United States in 1949, told authorities he had not performed military service during World War Two. That wasn’t really accurate. Karkoc was a founding member and an officer of the SS-led Ukrainian Self Defense Legion, and later was an officer in the SS Galician Division. Although there's no evidence he committed war crimes himself, there does seem to be pretty clear proof that “the Ukrainian company he commanded massacred civilians" as well as suggestions that he "was at the scene of these atrocities”, according to the AP.
It’s a little surprising it has taken so long to uncover Karkoc's past, considering he hasn’t done a very thorough job of hiding it. He published a Ukrainian-language memoir in 1995 in which he writes about how he helped found the Ukrainian Self Defense League in 1943. But his name was only flagged by a retired clinical pharmacologist who carries out Nazi war crime research in his free time. When the AP knocked on Karkoc’s door in northeast Minneapolis, he refused to speak: "I don't think I can explain," he said.
Polish prosecutors said they will investigate Karkoc, considering most of the unit’s crimes took place in Poland. German authorities have also said they are interested in exploring the case to see if there is enough evidence to prosecute.

Rico says where's Simon Weisenthal when you need him? (Oh, yeah, he's dead. Amazing, that these fucking Nazis live so long...)