Hunter Biden, the son of Democratic presidential nominee Joe Biden, was invited to speak at Thursday night's Democratic National Convention despite the fact that he still owns a controversial 10% stake in the private equity firm BHR Partners.
That investment has been a matter of intense focus from the Trump campaign, which alleges that Joe and Hunter Biden travelled aboard Air Force Two to China in 2013 so that they could secure $1.5 billion from the Bank of China, in funding for the firm.
Such activity would be an improper use of taxpayer resources, something Team Trump suggests is not out of the ordinary for Hunter Biden.
The president has previously questioned Hunter's work with Burisma Holdings, a Ukrainian gas company. Allegations are that Joe Biden used his political influence to pressure the country's former president into crippling an investigation of the firm's dealings by firing the prosecutor working the case.
The elder Biden has defended his son and also pledged that no one in his family would, "be engaged in any foreign business" if he is elected president. For his part, Hunter Biden said through a lawyer last October that he would resign his board position with BHR.
Chinese documents show that to this point, however, that hasn't happened.
The Trump campaign continues to highlight the Biden family's conflict of interest when it comes to China.