[Dan Evans]

"Congress shall make no law" meant what it said, but did not mean that only Congress was so restricted.

Why not? That's what it says, "Congress", not the states.

[jonestown]

True, our Constitution, in Art VI, explicitly establishes that it cannot be breached by any government entity.
-- Fed/State or local, ALL officials are pledged to support the US Constitution and its Amendments as the supreme Law of the Land.

"Congress shall make no law" meant what it said, but did not mean that only Congress was so restricted.

Why not? That's what it says, "Congress", not the states.

Art VI, and the rest of my comment explains "why not". -- Did you bother to try to understand them?

The 10th made clear that States were also prohibited powers, among them the power to infringe on peoples RKBA's.
After the civil war, southern States were denying freed slaves the RKBA's, under the pretense that the BOR's did not apply. The 14th was ratified to end that controversy.