How can people migrate to an English speaking country without having to speak English?

by UNC - CFC - USFK
Question by JazzyKat: How can people migrate to an English speaking country without having to speak English?
I'm currently in Australia and I work in Retail here and recently have had so many customers who can't speak english, don't want to pay the price of the item but say they can't speak english.
How is it that English speaking countries let migrants into the country without being able to speak our languge?
I am wanting to migrate to Japan but am finding it difficult

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