The source mentioned in the question leave enough loopholes that the colored people would be forced into slavery again and again.
Explanation:
Although the ordinance prohibited the practice of slavery in the region north-west of Ohio of the United States legality of his or her servitude was open to a legal framework where the jurisdiction of the States played a major role. therefore, people benefitted from the slaves could easily manipulate the laws by forcing the free people again into slavery in the territories where slavery was still legal. Again the poor slaves left with little chance to defend their freedom.
