The United States v. Flannery et al., Executors of the Estate of James J. Flannery, Deceased was a 1924 Supreme Court case that revolved around tax law and estate administration. The executors of James J. Flannery's estate were being sued by the U.S government for unpaid taxes on his life insurance policy proceeds, which amounted to $100,000 at the time of his death in 1917. The main issue under consideration was whether these proceeds should be included as part of gross income for taxation purposes or not. Flannery had taken out two life insurance policies with himself as both owner and beneficiary; upon his death, he left no instructions regarding their disposition in his will nor did he assign them to anyone else during his lifetime. The court ruled against the executors' argument that since they didn't receive any economic benefit from these policies until after Flannery's death (when they became taxable), it shouldn't count towards their gross income before then. Instead, Justice McReynolds held that because ownership rights over those policies passed directly from decedent to beneficiaries without going through probate process - thus avoiding potential claims by creditors - this constituted an immediate financial gain subject to federal taxation.

In the dissenting opinion for The United States v. Flannery et al., it was argued that the majority had erred in its interpretation of the law and misapplied precedent. The dissent took issue with how income from a trust, created by James J. Flannery before his death, was treated under tax laws. They believed that this income should not be considered part of Mr. Flannery's gross estate because he did not have control over or access to these funds at the time of his death; thus, they could not be subject to taxation as part of his estate under existing laws and precedents regarding estate taxes at that time.