. . . at the expense of the poor. Greenpeace, and the environmental groups tag along because they are luddites who want to bring a halt to human progress, and economic development.
The rule is: Imports = wealth to the nation; exports = wealth to a few wealthy export corporations, and big agriculture ventures. The ultimate problem is the wealth to the people is defuse, each of us only receiving a small increase, but when spread over tens of millions of people the amount is huge. Exports focus a tiny fraction of the total import wealth on only a few businesses, bringing each one of them millions. These businesses are able to each take a small fraction of the millions, and use it to further persuade politicians, and the public to continue with import tariffs.
Vampires like Greenpeace, and Sierra Club are willing to support this because they realize that tariffs lower total world industrial production, and GDP, meaning they lower world wealth, and this is their primary goal, make us all poorer.
Here in the US, both parties have been infected with this stupidity virus, and it seems to have strong roots throughout the EU, including Germany. This is a disastrous outcome especially for the emerging world economies.
Luckily, we are helmed by the least competent political class in the modern era. Oh, bother!