Soooo, we introduce a set of trade tariffs where imports are tax depending on the degree to which the exporting country has already imposed a carbon tax on manufacturer.
You are missing the point. Imposing tariffs is a way to force other countries to follow some rules. But if your own country doesn't follow those rules, what sense does it make? And that's the situation here, because the 3 largest CO2 producers are US, Russia and China, naturally, because they are biggest. But China actually invested heavily into solar and lowering their CO2, such as electric buses, while US left Paris Accord, rejected Green New Deal, started more oil drills and did a bunch of other things that actually increased their CO2 production. So if anyone should impose carbon duties, it's everyone else around US to force US to start following the rules.
So tariff's are a tool that can be used for good or bad? So, was the message the previous poster receiving that tariff's are bad, or that the current use of tariff's are bad? If it was the former, it disagrees with your message.
I'm not clear on how that factors in. The previous poster's point was that there was a push of the message that 'tariffs are bad' that seems to have some level of social acceptance, but now that there is a desired use of tariffs there seems to be a change in opinion.
That is overall a very weak standard of evidence, and taken by itself isn't worth much at all. But taken with other incidents in the past few years people might reach the conclusion that there is a great deal of double standards being used to measure certain politicians. This results in a comment said in passing that signals they feel that the current acceptance or lack thereof of tariffs is another case of that double standard.
Perhaps one could argue that such said in passing remarks are not acceptable for the level of discourse excepted by NH comments (though this risks becoming recursive).