Article VI, Clause 2 of the United States Constitution, known as the Supremacy Clause:
This Constitution, and the Laws of the United States which shall be made in pursuance thereof; and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in (
the constitution or laws of any state) to the contrary notwithstanding.
Parens added for clarity.
nder the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in (the constitution or laws of any state) to the contrary notwithstanding. I think it's a common misreading that causes confusion around this issue. The phrase you highlighted above is often misread as "the Constitution, or laws of any state", with the comma greatly changing the meaning, which could be restated as "the constitution of any state, or laws of any state".
Of course, for people who can't even understand a simple declarative of "the right of the people to keep and bear arms shall not be infringed", it's easy to see how they could make that mistake.