Such a stupid comment by you. Why didn't US give China space scientist some job to do?LOL the history of the ISS is that is created by the US to give soviet scientists something to do so they won't go to North Korea or other despotic regimes for works.
Like it or not NASA is the only serious game in space.
US couldn't build the main core themselves that time and that is why they rope in Russian. They added in Japan and EU to lessen the financial burden of ISS for american. But the EU feel short change as they time on ISS are very limited.
A big reason why most likely ESA will join in China space station in future.