Can States Ignore Federal Laws?

The Shorthorn

Actually, though, the Civil War long ago resolved the question of whether a state or a state official can nullify or refuse to comply with federal law. Laws passed by Congress are, as the Constitution states and as the war validated, “the supreme law of the land.” Further, the Constitution provides that “Judges in every state shall be bound thereby.” So, too, are state legislators who swear, as part of their oath of office, to uphold and defend the Constitution of the United States.
Laws passed by Congress cannot be ignored by state officials, whether they like the laws or not. But any law deemed to violate the liberties of the people or the sovereignty of the state may be challenged through the courts.

Interesting. The professor indroduced that observation after referencing some of the states that are rushing to pass legislation that they will not be bound by future gun laws.
What do you think?  Please leave a comment.