Isn’t it interesting that unions supported Dems so vehemently when it took a GOP President Elect to actually represent their interests?
That's because Trump re-purposed an existing political party - the GOP - to reflect traditionally conservative democratic policies.
It's why the old vanguard of the GOPe opposes Trump, along with their allies on the far left, the progressive socialists. They both hate the threat posed by the center (as crafted by Trump) to their entrenched uni-party corruption.