I know electoralism is unpopular here, I apologize in advance. Has any party, while campaigning for workers' votes, ever offered to tax unionized workers' wages preferentially; like an excise tax against non-union shops?
I noticed that you can’t deduct, as a business expense, any amount of money spent in furtherance of a crime. Why can't you change tax law so that only a quarter of non-union wages can be deducted from a business' taxable income? (Of course you could also define what a union is to prevent "straw unions", ostensibly controlled by capital.)
You'd have another tax "revolt" like in 2010 after they passed Obamacare and employers had to give full time employees healthcare. The small business tyrants would go absolutely ape shit.
You're right; it's sad there's no class solidarity in this country.