US probes China-tied aluminum firms: report

US authorities are investigating whether companies tied to a Chinese billionaire evaded punitive tariffs on aluminum imports, according to a media report on Wednesday. Agents from the Department of Homeland Security recently questioned US companies and former employees tied to Liu Zhongtian, founder of China Zhongwang Holdings Ltd, The Wall Street Journal reported, citing knowledgeable sources. Zhongwang aluminum products made in China are subject to import tariffs of as much as 374 percent beca