WASHINGTON: Ahead of a high-stakes summit between the US and Chinese leaders, the wife of a detained Chinese American seismologist expressed hope that an intervention by President Donald Trump could bring home her husband, Youlin Chen, nearly two years after he was detained in China. Along with issues ranging from artificial intelligence security to Iran, Trump is expected to raise with Chinese leader Xi Jinping the cases of Chen, 54, and Min Zin, 53, the only two American citizens considered
