[vkou]

The purpose of carbon tarrifs is not to punish other countries.

The purpose of carbon tarrifs is to make foreign dirty-energy-intensive products less competitive, compared to less dirty-energy-intensive ones.

Because we already have a way of making domestic dirty-energy-intensive products less competitive. It works great. It's called a domestic carbon tax.

They remove the immediate complaint of "If we impose a local carbon tax on energy, foreign imports will outcompete us, because they don't have to pay it."

[BurningFrog]

OP talked about a carbon tax, as am I.

You're talking about "carbon tarrifs", which I've never heard of, and don't know what they are.

[vkou]

A carbon tariff is a carbon tax, but on external goods, that come from countries which don't have carbon taxes of their own.