Was the Fugitive Slave Act a violation of state's rights?

[True Federalist (진정한 연방 주의자)]

Was it an interference with how northern States chose to deal with the question of slavery? Most assuredly so.

Was it unconstitutional? Most assuredly not.  Clearly covered by Article IV Section 2 Clause 3.

For those who argue that instead of judges, juries should have been involved, let me ask if you favor juries for the criminal extradition provisions of Article IV Section 2 Clause 2.

The Constitution as drafted made the United States as a whole a slave-holding country and so it would remain until the XIIIth Amendment.

That is not to say that there are not troubling aspects to the law.  That the fees received by the commissioners depended upon the decision rendered being the prime troubling aspect.

Unfortunately, bad laws need not be unconstitutional laws.