Really, requesting data from China but at the same time denying data to China. If that is so called science, then NASA and the US have a funny way to show it.That's just science. Published data is fair game all the way around.
cite? That would be a violation.
Again, the US has no problem if it is in its interest to cooperate with China, restrictions can be sidestepped. Here is an example.
"During China's 2019
It is a scientific experiment not docking. 27 nations have requested cooperation with China space station. 18 nations have been granted. The US has also asked for cooperation with the China space station for scientific experiment which is denied by China.