What do you think about people who come from overseas and work in the executive positions?

What do you think about people who come from overseas to your country to work in executive positions? That is, work as managers, bank officers, language teachers, senior office workers or lawyers, etc.

Do you think they are really that impressive or do they really have problems finding employment in their own country so that they have to go to yours?
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I think they must be pretty smart and brave, having to learn a new language or culture. My impression is that they are more determined than the average person and probably would not have any more trouble finding employment in their own country.