A watchdog group has filed a complaint with the Office of Government Ethics over a recently-disclosed email that suggested Hillary Clinton intervened in a business deal for a friend of her son-in-law.

The Foundation for Accountability and Civic Trust, a right-leaning ethics group, filed the letter Friday in response to an Associated Press story about the apparent exchange of favors, which took place in the fall of 2012.

In an email to Clinton's son-in-law Marc Mezvinsky, Harry Siklas asked for help getting in touch with Clinton's State Department office so he could lobby for a deep-sea mining company in which he had invested. That firm, Neptune Minerals, had also recently become a client of Goldman Sachs, where Siklas worked.

Matthew Whitaker, executive director of FACT, noted executives at Goldman Sachs had supported Clinton's past political campaigns and donated extensively to her family's foundation.

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