Everyone in any level of any government is terrified of what would happen to their economies if cheap chinese labor is cut off.
Examples (my hubby keeps track of these things) - tires and hand tools. From hubby's efforts to buy American over the last couple of months, he estimates that prices in the US would go up 70% for many key items if China cut us off from exports.
Now, obviously, China's not going to cut their own throats by doing that, because cutting off their primary market risks civil insurrection with all the jobs that would be lost.
However, it does underscore the dynamics here, and why so many countries around the world are not keen on calling the Chinese to task on this issue.