In United States v. Estudillo, the Supreme Court considered a case involving land grants in California. The dispute centered around whether or not certain lands were public domain and thus subject to federal control, or private property belonging to individuals who had received them through Spanish and Mexican grants prior to the annexation of California by the United States. The court held that these lands were indeed private property, as they had been granted before annexation and therefore could not be taken away without just compensation under the Fifth Amendment's Takings Clause. Furthermore, it was determined that Congress did not have authority over such matters since they fell outside its power under Article IV of the Constitution which gives exclusive jurisdiction over state boundaries to individual states themselves. This decision established an important precedent for future cases regarding land ownership rights in newly acquired territories by affirming that pre-existing claims must be respected even after changes in sovereignty occur.

In United States v. Estudillo, the Supreme Court was tasked with determining whether a federal statute that authorized the seizure of vessels engaged in smuggling goods into California violated the Constitution. The majority opinion held that Congress had acted within its authority to pass such legislation and thus it did not violate any constitutional provisions. However, Justice Field dissented from this decision and argued that Congress had exceeded its power by passing a law which interfered with state sovereignty over matters related to taxation and revenue collection. He further contended that if Congress could pass laws regulating commerce between states, then they would have virtually unlimited power to regulate all aspects of life in each state without regard for their respective constitutions or local laws. Ultimately, he concluded that allowing such an expansive interpretation of congressional powers would be detrimental to both individual liberty as well as states’ rights under our system of government