In the Department of Revenue v. James B. Beam Distilling Co., 1963, the Supreme Court ruled that a Kentucky tax on imported whiskey was unconstitutional because it violated the Import-Export Clause of the U.S. Constitution which prohibits states from imposing taxes on imports or exports without Congress's consent. The case arose when Kentucky imposed a tax on all distilled spirits held in storage for aging within its borders, regardless of their origin - domestic or foreign. However, this disproportionately affected importers like James B. Beam Distilling Co., as bourbon (a major product) requires long aging periods and thus stays in storage longer than other spirits before being sold domestically or exported out-of-state/internationally. The court found that such taxation constituted an indirect burden upon exportation and discriminated against imported goods by subjecting them to multiple state-level impositions not faced by locally-produced items; hence violating both Commerce Clause and Import-Export Clause principles.

In the dissenting opinion for Department of Revenue v. James B. Beam Distilling Co., Justice Byron White argued that the majority's decision to apply a new rule retroactively was inconsistent with previous court decisions and could lead to unfair results. He contended that when a court overrules its own precedent, it should only apply the new rule prospectively (to future cases), not retrospectively (to past ones). This is because parties in past cases have relied on existing law in making their decisions, and changing the rules after-the-fact can disrupt those settled expectations. Furthermore, he expressed concern about potential financial implications for states if they were required to refund taxes collected under laws later found unconstitutional. In his view, such refunds would constitute an unwarranted windfall for taxpayers at significant cost to state treasuries.