We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
CEO jobs of big firms, particularly banking and finance, are advertised globally and so CEOs already compete with 'immigrants', which is why if you check senior management of a US company, you may well find the positions occupied by non-Americans. The same is true for British, French, German, etc companies whose senior management may be nationals from another Country.
The current Governor of the Bank of England is Canadian... for example.