Live updates: Hunter Biden emails become presidential campaign issue

Sources have told Fox News that 'the big guy' is a reference to the former vice president.

One participant in an explosive email thread allegedly involving Hunter Biden has corroborated the veracity of the messages, which appear to suggest a payout for Biden's father, Democratic presidential nominee Joe Biden, as part of a deal with a Chinese energy firm.

One email, dated May 13, 2017, and obtained by Fox News, includes a discussion of “remuneration packages” for six people in a business deal with a Chinese energy firm.

The email appeared to identify Hunter Biden as “Chair / Vice Chair depending on agreement with CEFC,” in an apparent reference to now-bankrupt CEFC China Energy Co.

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