Answer:
since slavery was over, the southerns were angry. they would threaten and sometimes even kill them. black people could still work for them, but they would have to be paid. even white people would work
Explanation:
John C Calhoun
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The answer is true let me know if you need an in depth.
The clause is really a state's rights clause. A state may not pass a law that makes something illegal that was legal before the law was passed. In other words if a state suddenly passed a law that said it is no longer legal to park your car in front of any government building, but it was legal to do so yesterday, the police cannot come to your door and issue a ticket for parking in front of a government building because you did it yesterday.
The constitution actually uses the phrase ex post facto law in Article 1 Section 10 Clause 1.
