Roger B. Taney,
United States v. Turner (52 U.S. 663…
“ And it can never be maintained in the courts of the United States that the laws of any State of this Union are to be treated as the laws of a foreign nation, and ascertained and determined as a matter of fact, by a jury, upon the testimony of witnesses. And if the Spanish laws prevailing in Louisiana before the cession to the United States were to be regarded as foreign laws, which the courts could not judicially notice, the titles to land in that State would become unstable and insecure ”
