Trump promised China US silence on Hong Kong protests during trade talks

* US officials banned from supporting pro-democracy protests* CNN reports Trump gave Xi pledge in personal phone callDonald Trump and Xi Jinping at the G20 summit in Osaka in June. Photograph: Brendan Smialowski/AFP/Getty ImagesUS officials have been banned from supporting pro-democracy protests in Hong Kong, after Donald Trump reportedly promised the US would stay quiet during trade negotiations.Trump gave the undertaking to his Chinese counterpart, Xi Jinping, in a phone call in June, accordin