One reason for this may be that they are cheaper for their employers although they falsely sell themselves as native speakers from the US! All of them involved in this show are crooks! To be fair, it is also often true that these Eastern Europeans are often better trained with much better qualifications than real Americans - a lot of them who can't even count till ten and show poorly written English for a native speaker.

Even the most ill-educated American is born with the best qualification of all which he commenced learning while still in his mother's womb- certainly still in his cot.....for teaching conversational English. One school I worked in staffed by Europeans, they had all changed the text books- instead of 'Southend-on-Sea' for example, they reasoned that you can't find a town built on the sea, and promptly changed it to 'Southend near the sea' hahaha! Yes the foreigners, including Africans always have degrees- they are not worth toffee!