Comment by JCTheDenthog

Rigorous examinations for English fluency and for competency in their alleged field of expertise would be a good start. I have several H1B coworkers in the US who barely speak intelligible English, and who barely understand normal conversation let alone anything technical. A blatant example of this that I experienced recently being that several of them could not understand that just because a method in C# is asynchronous does not mean it executes out of order.