If that's the problem then they're not supplying the right fix. Surely restricting this to users located in the US doesn't prevent people from writing in a language that isn't English. Google should be capable of detecting the language of a query, and potentially rejecting it based on that with an apology.
> PR,
Obviously there must be _some_ reason why they're doing this. Doesn't mean it's a good reason.
> scaling, not enough capacity for the new users.
That would be rather embarrassing for Google.