On Aug. 10, the U.S. Senate passed President Joe Biden's Infrastructure Investment and Jobs Act (HR 3684 or Infrastructure Bill) by a vote of 69-30. The $1 trillion Infrastructure Bill received bipartisan support with a proposed $550 billion in new infrastructure spending over the next five years that would be offset by a combination of tax and nontax provisions.

Among other proposals, the Senate bill includes a provision to resurrect a modified version of the long-expired Hazardous Substance Superfund Trust Fund (Superfund) excise tax on chemical manufacturing and imports (Superfund excise taxes). The bill reinstates certain excise taxes to replenish the Superfund, which provides the federal government with resources to respond to environmental threats related to managing hazardous substances.