Imports aren’t so challenging: You’re effectively imposing a new tariff, and tariff calculation is already a complex business of defining categories and setting

Imports aren’t so challenging: You’re effectively imposing a new tariff, and tariff calculation is already a complex business of defining categories and setting rates. It’s a drop in the proverbial bucket for some Federal agency to annually assess the rough carbon intensity of a dollar’s worth of exports from 150 nations across a few dozen industries.