Dupe after dupe betrayed their country to the Soviet Union. These dupes were British and American. Some were middle-class affluent people. Some were comparitively poor - examples: Houghton, Sgt at Arms,Secret submarine base, Portland, England. (less than $50 weekly). Vassal, low paid radio operator, British Embassy Staff, about $35 dollars a week. Marshall, $35 a week cypher clerk, British Embassy, Moscow.
With the American traitors, the ones who were finally caught, was because they had scads of dollars to spend- it is Follow the money
Oswald, married and with a daughter, was virtually always Stony Broke.