The idea of nullification gained new traction in the 1950s as the Supreme Court ordered desegregation of schools in Brown v. Board of Education, and Southern states in response mounted a campaign of massive resistance to oppose it, arguing that federal desegregation orders infringed on states' rights. Ten ex-Confederate states passed declarations of interposition to oppose these efforts. But the Supreme court in Cooper v. Aaron rejected the declarations and held nullification and interposition impermissible.
The id,ea of nullification gained new traction in the 1950s as the Supreme Court ordered desegregation of schools in Brown v. Board of Education and Southern states in response mounted a campaign of massive resistance to oppose it, arguing that federal desegregation orders infringed on states' rights. Ten ex-Confederate states passed declarations of interposition to oppose these efforts. But the Supreme court in Cooper v. Aaron rejected the declarations and held nullification and interposition impermissible.