>Begging the question.
Explain? Countries invoking "American Imperialism" isn't exactly an unheard of concept. The point isn't whether "American Imperialism" or "pollution" is objectively true, it's whether other countries would invoke those reasons to set up retaliatory tariffs.
>While "American Imperialism" is an intangible concept, pollution very much is not
How about something more concrete like "EU/NATO enlargement", "Chinese spying", or "tech giants (who are mostly American) spreading misinformation"?
>With less adversarial framing, you could think of it as finding common ground for an intermingled future.
That's a nice thing to hope for, but isn't the world we live in. Countries who have the tariffs applied to them aren't going to interpret them as "common ground for an intermingled future", they're going to think it's the opening shot of a trade war.