I believe it was governor John M. Slanton who sentenced Leo Frank to death.
He was a diff. color citizen and he made a speech after rosa parks (diff color) decided to refuse to give up her seat after a long day at work. So he made a " I have a dream" speech and later on he got assassinated in his house.
Answer:
The ability to make the purchase wasn't in the Constitution but the deal needed to be completed quickly.