In the USA, Europe, and elsewhere, policymakers have seen that producers’ carbon emissions differ in several components of the world—and politicians are more and more crafting laws based mostly on that variance. Examples embrace: import tariffs depending on merchandise’ embedded emissions, such because the E.U.’s Carbon Border Adjustment Mechanism or the U.S.’s International Air pollution Charge Act; obligatory carbon labelling for sure high-profile, high-emissions merchandise reminiscent of within the E.U.’s Battery Regulation; and public procurement guidelines that favor low-emissions merchandise.