On November 15, 2021, President Biden signed the Infrastructure Investment and Jobs Act into law, reinstating two long-expired Superfund excise taxes on certain manufactured and imported chemicals, with effect as of July 1, 2022, through December 31, 2031. As a result, chemical companies will need to undertake a detailed review of the chemical composition of their products and their supply chain to understand if a product is subject to excise tax or whether an exception applies. This Legal Update provides further detail.