The current administration sees China as a huge threat, the previous several administrations (republican and democrat) did not. Or if they did, they thought the way to deal with the threat was through economic cooperation.
China has been a threat to US interests in the Pacific for decades. Now China is the regional hegemonic power which dwarfs the weak US Pacific partnership. China's international influence will continue to grow and they will likely achieve their 100 year plan. That's not really fearmongering, China has plenty of problems but they will eventually succeed.
