In the case of Smyth v. New Orleans Canal and Banking Company, 1891, the United States Supreme Court ruled on a dispute over property rights in Louisiana. The plaintiff, Mr. Smyth, claimed that he was entitled to certain properties under an old Spanish land grant which had been confirmed by Congress but later sold at public auction due to unpaid taxes. The defendant bank argued it held valid title after purchasing the lands from those who bought them at this auction sale. The court found in favor of the bank based on several factors: first, because there was no evidence that Mr. Smyth or his predecessors ever took possession of these lands; secondly because even if they did have some claim initially - their failure to pay taxes resulted in forfeiture; thirdly as per Louisiana law - tax sales are considered absolute unless successfully contested within two years (which wasn't done here). Therefore any potential claims were extinguished when purchased by subsequent buyers. This decision underscored principles regarding property ownership and taxation laws while also highlighting how different jurisdictions may handle such matters differently depending upon local statutes and regulations.

In the dissenting opinion for Smyth v. New Orleans Canal and Banking Company, it was argued that the majority's decision to uphold a Louisiana law allowing banks to charge higher interest rates than those permitted by other states violated the Constitution's Contract Clause. The dissenting justices believed that this law unfairly interfered with contracts made between private parties in different states, asserting that such interference went beyond what was constitutionally permissible. They also contended that upholding this law would set a dangerous precedent, potentially leading to more widespread state interference in interstate commerce and contract rights. Ultimately, they felt that protecting these fundamental economic freedoms should take precedence over individual state laws.