One data point on public works construction, the Davis-Bacon act and "prevailing wages". https://www.forbes.com/sites/timworstall/2016/08/31/union-wages-increa

One data point on public works construction, the Davis-Bacon act and "prevailing wages". https://www.forbes.com/sites/timworstall/2016/08/31/union-wages-increase-construction-costs-by-20-abolish-davis-bacon/#173fa964406e https://www.forbes.com/sites/timworstall/2016/08/31/union-wa...