Laws passed in reaction to it were struck down in later cases like Ableman v. Booth.  
Reflecting the inability of sources to agree on basic facts like the number of opinions in this case, the database LEXIS completely ignores Henry Baldwin's opinion. In a filiopietistic biography, William Wetmore, the son of the author of this case's majority opinion, claimed his father thought it was a "triumph of freedom." That dumb analysis hinges on how its majority opinion claims an institution is "municipal" and thus "localized," and ignores how it declares a 1793 act "clearly constitutional...unless prohibited by state legislatures." This case centered on Margaret (*) Morgan and the John Ashmore estate in Maryland.  Laws passed in reaction to it were struck down in later cases like Ableman v. Booth.  Joseph Story wrote this case's majority opinion, which led to the passing of many "personal liberty laws."  For 10 points, what 1842 Supreme Court case voided the conviction of a slave catcher?
Reflecting the inability of sources to agree on basic facts like the number of opinions in this case, the database LEXIS completely ignores Henry Baldwin's opinion.
Prigg v. Pennsylvania [or Pennsylvania v. Prigg]