[scroot]

Could this result in moving to countries that don't have such policies, thereby allowing for increasing emissions (ie carbon tax havens)

[perfunctory]

Would have to tax imports from those countries as well

[psandersen]

Pricing in externalities are the only good economic argument for tariffs I'm aware of...

Carbon tax + tariffs in proportion to the lack of carbon taxes would be the most logical way of setting up a market-based solution to climate change.

[FrojoS]

Exactly. And sure, some people might move away because of this issue. But unless people start starving a majority won’t leave their homes. They will just revoke the legislation.