I’m not in favor of increasing welfare or in favor of unions.
Though accepting your red herring for purpose of discussion...
Welfare recipients and union members, are Americans. Sending US jobs and factories to history’s largest communist nation doesn’t help any Americans.
Only China’s politboro. Oh. And the PLA.
Unions forced many of our companies first to the South - and then overseas. In the short run the greedy little jerks got wages higher than workers around them who didn’t belong to unions. In the long run companies ran away from the bullies and took American jobs with them.