Rav Avigdor Miller was born in Baltimore and went back to Europe to learn and get married. As an american citizen he had to register as an Alien and he developed a friendship with someone who worked at the american consolute who was also from Baltimore
As Rav Millers wife as not American this individual had to get her the correct papers to be allowed to go (Their children were american citzens although they had to be registered)
It was this individual who was working at the American Consolute who told Rav Miller to leave and helped him bring his family along as well (A person who wanted to make trouble could have made trouble for the Kids who were not born in the US and certainly not the wife who had no rights to emigrate to the US)