A number of high-profile American business leaders are in China this week for the country's second annual international supply chain expo, including Apple's Tim Cook.

Prior to the expo, Cook and other top executives met with Chinese Premier Li Qiang. The meeting, as reported by the American Chamber of Commerce in China, focused on enhancing economic and trade cooperation. Representatives from companies like Corning and Rio Tinto were also present.

President-elect Donald Trump is threatening to impose sweeping new tariffs on Mexico, Canada and China as soon as he takes office as part of his efforts to crack down on illegal immigration and drugs