US employers spend more than $1.5bn a year to fight labor unions, report finds

They're winning all the way to the bank. Those costs are also tax deductible, so free government support to kill unions.

$1.5B a year is such high ROI for them.

Well yeah. I mean. In modern times you could say workers have been fighting this battle since the mid 1700s I think. And further back even ancient Rome had a shipbuilders guild that took care of its members. Everybody who's anybody knows unions are good for workers. And when everything you earn must be taken from others, that's a bit much to ask of today's billionaires