It makes complete sense for the left to oppose this. And it is completely consistent with position of "i want these smart selective predictable tariffs". It would not be consistent with what is happening now
You might want to tell labor. I just listened to an hour-long podcast with the Teamsters leader, where he revealed that over half of their members supported Trump in the most recent election:
https://podcasts.apple.com/us/podcast/why-unions-went-for-tr...
The most virtuous of us do not vote their own interest first, but rather the interest of justice and morality. The assumption that people should or will vote their own interest first & always is what the kids these days seem to call "mid" and "basic".
The infantilizing thing is constantly project positive motivations on people who do the opposite.
They were literally looking forward to cause harm, they just thought it will harm only liberals, trans, stupid feminists and well ... anyone not them.
That being said, actual labor as in worked did not went for Republicans all that hard. It appears that way only if you restrict labor meaning to males of specific demographics.
It is not labor thing. It is gender resentment over not being on top of hierarchy thing.