covered fuel, or the foreign cost of carbon, or otherwise administering the carbon border fee adjustment, it is the sense of Congress that the Secretary should collaborate with authorized officers of any jurisdiction, including sub-national governments, affected by the carbon border fee adjustment. (c) Methodology In determining the production greenhouse gas emissions of an imported carbon-intensive product, the upstream greenhouse gas emissions of an imported covered fuel, the full fuel cycle greenhouse gas emissions of an imported covered fuel, or the foreign cost of carbon, the Secretary shall use reliable methodologies, which— (1) as may be necessary or convenient— (A) distinguish between different types of covered fuels, (B) distinguish between a covered fuel’s greenhouse gas content and that covered fuel’s upstream greenhouse gas emissions, (C) distinguish between the different types of greenhouse gas emissions which compose a covered fuel’s upstream greenhouse gas emissions or greenhouse gas content, as well as the various processes which produced those emissions, and (D) distinguish between the different types of greenhouse gas emissions which compose a carbon-intensive product’s production greenhouse gas emissions, as well as the various processes which produced those emissions, (2) ensure that no covered fuel, covered fluorinated greenhouse gas, or carbon-intensive product has the carbon fee, the fluorinated greenhouse gas fee, or the border fee adjustment imposed upon it more than once, (3) ensure that the implementation of the border carbon adjustment aligns with the carbon fee and the fluorinated gas fee, (4) in the case of incomplete data, rely upon the best available methodologies for interpolating data gaps, and (5) are consistent with international treaties and agreements. (d) Schedule The Secretary shall determine— (1) not later than 3 years after the date of the enactment of this section, the production greenhouse gas emissions of imported carbon-intensive products, (2) not later than 180 days