Here is a good reply to this problem from the comments page, and about a law - already on the books - which President Trump could use in this case. Another law, I had no knowledge about.....

"It is to OUR BENIFIT is we totally exit China and there are a few reasons why we should do it as soon as possible. First of all Trump does have the RIGHT to order all American Companies out of China. It can be one trough the 1977 law passed by Congress and Signed by Jimmy Carter and Jimmy Carter used the law himself and he was as leftwing as Obama! The Law is called The International Emergency Economics Powers Act. The Law has been used against Cuba, Iran, North Korea and Syria.

China is becoming a BELIGERENT and a BULLY! They are threatening their Neighbors, they are seizing Land and Islands from their Neighbors, they are engaged in Predatory Loans to African Nations in order to gain Land and Military Bases in Africa. This is all being done with the money which we send them for their CHEAP and INFERIOR goods. The Chinese are building up their Military, they have removed the one child policy, they have Militarized the South China Sea and the Taiwan Straights. China is on the move and they have SERIOUS INTENTIONS with SERIOUS RAMIFICATIONS and it is totally insane to bury our heads in the sand.

It is possible to stop China's ambitions and there is also the possibility that the Chinese Government could collapse. Every year there are millions of students who graduate and enter the job market and they must have work. If the don't have work there will be Social unrest and it would be directed at the Government!"

(If you can handle multiple spelling errors.) lol