Correct.
It was originally done to prevent the Feds from imposing Stricter Laws on the Citizens of Missouri than we already have. Mainly, "The Right to Keep and Bear Arms". If the Feds passed a law stating the private ownership of firearms is not allowed, it will not be enforced by our law enforcement. And our law enforcement would protect us from the Feds. Essentially, we would be in a first step of Succession from the United States.
But the wording has some worried that it would keep Missouri Law Enforcement from working with other groups like the FBI, DEA, Homeland Security. I don't think there has been any issues. But someone brought it before the Supreme Court for clarification.