The Environmental Protection Agency is proposing to issue regulations to implement certain provisions of the American Innovation and Manufacturing Act, as enacted on December 27, 2020. This rulemaking proposes to: Establish the hydrofluorocarbon production and consumption baselines based on historical data; establish the allowance allocation program to phase down hydrofluorocarbon production and consumption; determine an initial methodology to allocating allowances and allowing for the transfer of those allowances; establish provisions for the international transfer of allowances; establish requirements to support compliance with phasing down hydrofluorocarbon production and consumption; establish recordkeeping and reporting requirements; release certain data to provide transparency and support implementation of the program; and, address certain other elements related to the effective implementation of the American Innovation and Manufacturing Act. In addition to the proposed provisions, EPA is seeking advance input on how the Agency may alter its determination of company-specific allocations in later years. EPA is considering these issues, and therefore is seeking public input on them, but is not making any particular proposal in relation to them, and therefore will not finalize any requirements on these topics before issuing a notice of proposed rulemaking and requesting public comment.