Why isnt MLB and Lebron boycotting China over people not being able to vote in China?

I would guess because they don’t expect anything better from China.

They need to concentrate on the voter suppression going on right here in the United States.  

No one in the US is in a position to tell any other country about their people not being able to vote considering the traditionally low voter turnout here and the determined Republican efforts to keep minorities in the US from voting.