What are the threats an accountant of a MNC faces from local business environment?

For multinationals, that check usually comes from one of the Big Four, for two reasons. First, multinational organizations are complex, and their accounting requires global and industry-specific expertise that only the Big Four can offer. Second, the US government has mandated demand for the service. Large public companies must be audited by an audit firm registered with the regulator, created by the Sarbanes-Oxley Act of 2002. Most global companies pay one of the Big Four firms to audit them, and can hire the same firms for tax and consulting advice.

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I do agree with answer given.

Thanks for inviting I agree with answer given by Mr. Manseer