The KGB wanted to use this legitimate concern of Americans as a weapon to divide their Ukrainian and Jewish enemies, to discredit the large émigré communities in the United States and Canada, and to discredit any emergence of Ukrainian nationalism.
One of the names Hanusiak brought to the United States was that of John Demianiuk (Demjanjuk). His name was given to the United States Justice Department, which began an investigation of the retired Ohio auto worker. Soon, Demianiuk was accused of being "Ivan the Terrible," a brutal guard at the Nazi Treblinka death camp.
Source: The Institute of World Politics