Most comments on here regarding xenophobia etc seem to be missing the overall point of this article. The real issue is that these companies and individuals can

Most comments on here regarding xenophobia etc seem to be missing the overall point of this article. The real issue is that these companies and individuals cannot be held accountable by the FAA. Usually every single item of work can only be officially signed off (which makes you legally responsible for it) by somebody the regulator considers qualified to do so. If it later turns out that that particular job was done incorrectly a paper trail follows directly to the individual(s) responsible. Not surprisingly this kind of accountability makes your average engineer very diligent. If you have a lot of engineers that are not accredited and so cannot legally approve work (someone comes in and rubber-stamps everything), or are based in a country with a sketchy legal system you're gonna have a bad time upholding standards, regardless of how "good" the engineers are and the quality of their English. It would be xenophobic if the FAA was freaking out about work done in Europe, Canada, Australia etc too - but it isn't.