Core Viewpoint - Morgan Stanley is under scrutiny from the Republican head of the US House China committee regarding its due diligence in underwriting the $3.7 billion IPO of Zijin Gold International Co. in Hong Kong, which is linked to a company on a US blacklist for alleged human rights violations [1][3]. Group 1: Regulatory Scrutiny - Representative John Moolenaar has requested additional information from Morgan Stanley, including documents related to the IPO, as part of a broader investigation into Wall Street banks' involvement with Chinese companies [2][5]. - The inquiry focuses on whether the IPO facilitated Zijin Mining Group's consolidation of overseas gold assets while maintaining control, raising concerns about Morgan Stanley's due diligence practices [3][5]. Group 2: IPO Details - The IPO of Zijin Gold International Co. was the largest since May and the second-largest listing in Hong Kong for the year, following a $5.3 billion deal by Contemporary Amperex Technology Co. Ltd. [4]. - Zijin Gold's shares surged 68% on their first trading day and have since doubled in value [4]. Group 3: Broader Context - The House Select Committee on China is reviewing the involvement of Wall Street banks in IPOs of Chinese firms with military ties or records of labor abuses, indicating a heightened regulatory environment [5][6].