My $.02 on this issue.
It doesn't matter where you live or what you do for work. If your job is to support / help people using verbal communication, you better be able to understand and be understood by the people you support.
How many job requirements incude "good verbal and written communication skills". Almost all?
If they cannot communicate effectively with the person they're supposed to be helping, all that happens is the customer frustration level goes up. And that doesn't have a lot to do with technical abilities. If you're supporting English speaking people (not just Americans now but English speaking people), you better be able to speak and understand English effectively.
What they're doing with or what they'd be doing without that job is irrelevant.
EDIT: Hey, I actually agree with Fyron.
