How did Justice Joseph Story's dicta in Prigg v. Pennsylvania enhance an enslaver's right to recapture the enslaved who had traveled to "free" states?
a) By supporting legislation for the extradition of escaped slaves.
b) By reinforcing state sovereignty over federal law in such cases.
c) By emphasizing the Fugitive Slave Act's constitutionality.
d) By advocating for the abolition of slavery.