Why has productivity gone up more then wages since the 1970s and is it Joe Biden or Donald Trumps fault?
The answer is complicated, but, much of the blame lies on all of congress, senate, and all presidents since the 1970s.
Biden has been the least bad president during that time period as far as labor policy goes.
Trump has arguably been the very worst.
But, the problem is much much bigger and will take serious reforms at every level.