Yes i agree with what cdn_dude is saying.. it is really odd that the person got only a B2 visa.

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Originally posted by cdn_dude

The visa is usually B1/B2 combined (printed on the visa sticker) and can be used for either purpose. If the OP has given only B2 (which is really surprising), then your point is valid and he needs to apply for the business visa. But if the visa that he already has is B1/B2, then there is no need to make an appointment to get another visa, he can use the existing visa.

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