Actually, they were mostly from Nazi occupied countries. They had escaped, I think first to Yugoslavia. When they first landed in Italy, they were just in time for the town they landed in to be shelled, then searched by the Nazis.
I'm not sure how that contradicts my post. By the time they left Italy for Oswego, there weren't any Germans anywhere nearby. They certainly wasn't any threat of them being deported from an area under firm Allied control. I'm not an expert in the Oswego camp, and I will read further, but this is my understanding.