The tariff placed by US government is not only on China but why the media is now talking is because Trump has relaxed the tariff for other countries for 90 days and instead of reducing that of China, it was increased to about 120 percent. What I can say to that is that US have always seen China as a very strong competitor in every area like trade and industrial manufacturing, technology, warfare etc. So they will put more effort to discourage Chinese products in the US and allies of US.

Again, Trump made it clear that he is going to focus on the American people and so many orders have been made in that direction including the child birth right which is aiming to discourage migrants to see US as a safe heaven for child bearing and citizenship status.