In 2017, Congress passed the Tax Cuts and Jobs Act (TCJA) to deliver meaningful tax reform. But a little-known provision that was ignored far too long has created an existential threat to millions of American businesses and the families that rely on them. Prior to the TCJA, businesses could deduct their “research and experimentation” (R&E) expenses incurred throughout the year as ordinary expenses. For growth-oriented organizations, these account for the vast majority of expenditures, including major line items such as payroll and infrastructure. But beginning Jan. 1, 2022, companies were prohibited from deducting these normal operating expenses in the year…