Good question. The answer is the inertial of interest groups. US had put its weight on every corner of the society to demonize Russia, cut off every economic t

Good question. The answer is the inertial of interest groups. US had put its weight on every corner of the society to demonize Russia, cut off every economic tie over 70 years, while done the exact opposite towards China. According to what I've read, a majority of members of congress and senate have business connections with China back in 2018 (80%? I don't remember the exact number). Never mention the bad images lasting forever in the entertainment(mass brain wash) industry. Inside of the government, there have been piles of research papers, plans, and millions of man-year brain power accumulated on screwing Russia, it's cheap, reliable, achievable and efficient to just follow what old hands had envisioned. For great powers, it's painful to conduct strategic adjustment. In authoritarian countries, it's mostly done through cold blooded purge. In liberal democracy, it's often the mass propaganda campaign with helps of God sent PR events, under extraordinary leadership, which believe or not, is not what elected are good at.