In the 1897 case of Chaves v. United States, the U.S. Supreme Court was asked to determine whether a land grant in New Mexico made by Spain and confirmed by Congress could be challenged on grounds that it had been fraudulently obtained. The plaintiff, Chaves, claimed ownership of certain lands under a Spanish grant which he alleged was confirmed by an act of Congress in 1858. However, this claim was disputed based on allegations that fraudulent representations were made during the confirmation process. The court ruled against Chaves stating that once such grants have been confirmed they cannot be subsequently invalidated due to allegations of fraud or misrepresentation unless there is clear evidence proving these claims beyond reasonable doubt. Furthermore, any challenge must occur within a reasonable time frame after confirmation has taken place. This ruling reinforced legal principles regarding property rights and Congressional authority over public lands while also highlighting the importance of timely challenges when disputing such matters.

In the dissenting opinion for Chaves v. United States, the justice argued that the majority's decision was incorrect because it failed to properly interpret and apply relevant laws regarding property rights. The justice contended that under these laws, Chaves had a valid claim to his land based on his possession of it prior to its acquisition by the United States government. Furthermore, he believed that this right should have been recognized and protected by federal law rather than being overridden due to procedural issues related with filing claims within a certain time frame as determined by Congress. He also criticized the majority for ignoring evidence supporting Chavez’s case while giving undue weight to contradictory evidence presented by opposing parties in court proceedings.