In Hughes v. Fetter (1951), the Supreme Court ruled that state courts are ordinarily required-as a matter of the Full Faith and Credit Clause-to take jurisdiction of claims arising under sister-state law, their own wishes notwithstanding. Hughes remains a foundational case for conflict of laws and interstate relations.
Ann Woolhandler & Michael G. Collins,
Jurisdictional Discrimination and Full Faith and Credit,
Emory L. J.
Available at: https://scholarlycommons.law.emory.edu/elj/vol63/iss5/1