cozitoesie Perverts groom kids for sexual/psychological abuse by offering them sweets, cigarettes, alcohol, etc. 'MLM' racketeers groom adults for financial/psychological abuse by offering them cars, money, trips to exotic places, association with celebrities, group recognition, etc.
For all the reasons you have highlighted, immigrants (including illegal immigrants, and second, third, fourth, etc., generation immigrants), have been easy prey from 'MLM' rackets. The majority of 'Herbalife' recruitment has been in the Hispanic community in the USA in recent years. Illegal immigrants have been known as 'No-Fly Distributors' in 'Herbalife,' because they can't leave the USA to go on the trips.
After 'Amway' virtually vanished in France in the 1990s, for a while it reappeared almost exclusively in the Chinese community in, and around, Paris.
The 'ACN' racket has been particularly virulent amongst young Muslim men in Europe. This is highly ironic given that Donald Trump has fronted 'ACN.'
'FLP' is becoming virulent in the British Sikh community.