In Kavanagh, Collector of Internal Revenue v. Noble (1947), the U.S Supreme Court ruled on a tax dispute between the IRS and an individual taxpayer named Noble. The case revolved around whether or not certain payments made by Mr. Noble should be considered gifts under Section 22(b)(3) of the Internal Revenue Code and therefore exempt from taxation, or if they were taxable income as argued by the IRS. The court held that these payments were indeed gifts and thus non-taxable under federal law. The decision was based on several factors including: intent of payment, relationship between parties involved, source of funds used for payment among others which led to conclusion that there was no expectation for return benefits hence qualifying them as gifts rather than income. This ruling set a precedent in determining what constitutes a gift versus taxable income in relation to federal tax laws.

In the dissenting opinion for Kavanagh, Collector of Internal Revenue v. Noble, Justice Jackson disagreed with the majority's interpretation of tax law and its application to this case. He argued that the decision was inconsistent with previous rulings on similar issues and could lead to confusion in future cases. Specifically, he took issue with how the court interpreted "income" under Section 22(a) of the Revenue Act as it related to life insurance policies' cash surrender value. According to him, such a broad definition would mean that any increase in property value could be considered taxable income even if no actual money changed hands or if there were no realized gains from selling an asset - a view which he believed contradicted established legal principles about what constitutes taxable income.