Free trade combined with cheap labor led to a massive loss of national capability. We outsourced 75% of the supply chain for electronics, and provided decades of free training to foreign companies. Then we pulled a surprised mug when those same companies decided that they don't need us any more.
As a parent of young kids, I'm also keenly aware of how much random plastic garbage we import - just to throw it away after maybe one use. Party favors are a big one. Families are drowning in low-cost, low-quality products that wind up in a landfill. Free trade created this situation, and I don't think it's good for anybody except importers and factory owners.
I don't know what the solution is, and the current tariffs clearly aren't it. But free trade with China hasn't exactly been great for the US in a longterm sense, and we shouldn't pretend otherwise just because we're getting cheap consumer goods.