In Merchants' Bank v. State Bank, the Supreme Court of the United States was asked to decide whether a state bank could be held liable for the debts of another state bank. The case arose when the Merchants' Bank of New York sued the State Bank of New York for the debts of the latter's predecessor, the Bank of the United States. The Merchants' Bank argued that the State Bank was liable for the debts of the Bank of the United States because the State Bank had assumed the assets and liabilities of the Bank of the United States when it was formed. The Supreme Court held that the State Bank was not liable for the debts of the Bank of the United States. The Court reasoned that the State Bank was a separate legal entity from the Bank of the United States and that the State Bank had not assumed the liabilities of the Bank of the United States when it was formed. The Court also noted that the State Bank had not expressly assumed the liabilities of the Bank of the United States and that the State Bank had not been given the authority to do so. The Court's decision in Merchants' Bank v. State Bank established that a state bank is not liable for the debts of another state bank unless it has expressly assumed the liabilities of the other bank. This decision has been cited in numerous subsequent cases and has become an important precedent in the area of banking law.

In Merchants' Bank v. State Bank, the Supreme Court was asked to decide whether a state bank could be held liable for debts incurred by another state bank that had been merged into it. The majority opinion of the court found in favor of the plaintiff and held that the defendant was responsible for all debts incurred prior to its merger with another institution. However, Justice Field dissented from this decision, arguing that there were no legal grounds on which to hold one party accountable for obligations created by another entity before their union. He argued further that such an interpretation would lead to unjust results as creditors might attempt to collect from multiple parties who had not agreed or intended any responsibility towards them at all. In conclusion, he believed that holding one party liable under these circumstances would be unfair and contrary to established principles of law and justice.