1. The Compromises of 1820 and 1850 were null and void. Remember
the supreme court ruled that slaves were property and thus allowed
to be taken anywhere their masters wished to take them. This
made the old 36* 30 * line for slavery illegal and the idea of Popular
Sovereignty, the idea that the people should decide by popular vote
whether or not they should have slavery, to be illegal. Theoretically
you could take your slave anywhere.
2. The same idea applies to the Kansas Nebraska Act. This law was
illegal. Slavery could go anywhere.
3. The Abolitionists and the Northern States ignored this decision and
there were no legal attempts by the Southern States to force
Northern to accept slaves. The South pointed out that the North
ignore laws they did not like, they were correct and this increased
the radicals in the South to call for succession from the Union.
Anyway Dred Scott did get his freedom because his owner had
promised him hid freedom before the case was brought to court.
Hope that helps. Packers.