Is there any law that can prevent China from restricting migration of STEM workers to the US?
<p>Is there any law restricting China's ability to prevent <a href="https://en.wikipedia.org/wiki/Science,_Technology,_Engineering,_and_Mathematics" rel="nofollow">STEM</a> workers from coming to the US?</p>

<p>China has no power to ban anyone from entering the United States.  International law cannot stop China from exercising its power to prevent its citizens from leaving China, whether in the case of a STEM genius bound for the United States or in any other case.</p>

united-states international china